{"id":7388,"date":"2025-10-23T14:11:41","date_gmt":"2025-10-23T08:41:41","guid":{"rendered":"https:\/\/www.testleaf.com\/blog\/?p=7388"},"modified":"2025-10-28T15:24:20","modified_gmt":"2025-10-28T09:54:20","slug":"top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience","status":"publish","type":"post","link":"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/","title":{"rendered":"Top 25 CTS (Cognizant) Java &#038; Selenium Interview Questions and Answers 2026 \u2013 For 2 to 5 Years Experience"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_1_What_are_the_different_types_of_data_types_in_Java\" >Question:1. What are the different types of data types in Java?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_2_Define_an_Array_data_type\" >Question:2. Define an Array data type?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_3_What_are_access_modifiers_and_its_types\" >Question:3. What are access modifiers and its types?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_4_Explain_static_and_non-static_class_members\" >Question:4. Explain static and non-static class members?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_5_What_is_a_constructor_and_its_types\" >Question:5. What is a constructor and its types?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_6_What_is_inheritance_and_its_types\" >Question:6. What is inheritance and its types?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_7_What_is_the_Object_class_in_Java\" >Question:7. What is the Object class in Java?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_8_What_is_an_exception_and_its_types_How_to_handle_it\" >Question:8. What is an exception and its types? How to handle it?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_9_What_is_polymorphism_and_its_types\" >Question:9. What is polymorphism and its types?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_10_What_is_an_abstract_class_and_example_in_Java_and_Selenium\" >Question:10. What is an abstract class and example in Java and Selenium?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_11_What_is_an_interface_and_example_in_Java_and_Selenium\" >Question:11. What is an interface and example in Java and Selenium?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_12_Explain_List_and_Set_and_their_implementation_classes\" >Question:12. Explain List and Set and their implementation classes?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_13_What_are_the_different_types_of_locators_in_Selenium\" >Question:13. What are the different types of locators in Selenium?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_14_Difference_between_findElement_and_findElements\" >Question:14. Difference between findElement and findElements?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_15_How_to_select_a_value_from_dropdown\" >Question:15. How to select a value from dropdown?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_16_How_to_switch_to_different_frames\" >Question:16. How to switch to different frames?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_17_What_are_the_different_types_of_waits_in_Selenium\" >Question:17. What are the different types of waits in Selenium?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_18_How_to_handle_multiple_windows\" >Question:18. How to handle multiple windows?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_19_Usage_of_Jenkins_and_Maven\" >Question:19. Usage of Jenkins and Maven?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_20_How_to_perform_double_click_in_Selenium\" >Question:20. How to perform double click in Selenium?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_21_What_is_an_assertion_and_its_types\" >Question:21. What is an assertion and its types?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_22_Name_any_six_exceptions_you_handle\" >Question:22. Name any six exceptions you handle?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_23_How_to_retrieve_message_from_an_alert_box\" >Question:23. How to retrieve message from an alert box?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_24_What_are_listeners_in_TestNG\" >Question:24. What are listeners in TestNG?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Question_25_Difference_between_setSpeed_and_sleep_methods\" >Question:25. Difference between setSpeed() and sleep() methods.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/#Frequently_Asked_Questions_FAQs\" >Frequently Asked Questions (FAQs)<\/a><\/li><\/ul><\/nav><\/div>\n<div style=\"margin-top: 0px; margin-bottom: 0px;\" class=\"sharethis-inline-share-buttons\" ><\/div><!--[if lt IE 9]><script>document.createElement('audio');<\/script><![endif]-->\n<audio class=\"wp-audio-shortcode\" id=\"audio-7388-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/10\/Top-25-CTS-Cognizant-Java-Selenium-Interview-Questions-and-Answers-2026-\u2013-For-2-to-5-Years-Experience.mp3?_=1\" \/><a href=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/10\/Top-25-CTS-Cognizant-Java-Selenium-Interview-Questions-and-Answers-2026-\u2013-For-2-to-5-Years-Experience.mp3\">https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/10\/Top-25-CTS-Cognizant-Java-Selenium-Interview-Questions-and-Answers-2026-\u2013-For-2-to-5-Years-Experience.mp3<\/a><\/audio>\n<p>&nbsp;<\/p>\n<p>If you\u2019re preparing for a Cognizant (CTS) interview in 2026, this guide is for you! Whether you\u2019re a manual tester transitioning to automation or an experienced QA engineer, knowing how to handle Java and Selenium-based interview questions can make all the difference.<\/p>\n<p>CTS interviews are known for testing your core programming logic, automation approach, and real-time problem-solving skills. Based on Testleaf\u2019s real interview experiences, we\u2019ve compiled the Top 25 most commonly asked CTS Interview Questions and Answers \u2014 designed to help you crack your next interview confidently.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Question_1_What_are_the_different_types_of_data_types_in_Java\"><\/span><strong>Question:<\/strong><strong>1. What are the different types of data types in Java?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Java supports two main categories of data types: Primitive and Non-Primitive. Primitive data types include byte, short, int, long, float, double, char, and boolean. Non-primitive data types include Strings, Arrays, Classes, and Interfaces. Primitive types are memory-efficient, while non-primitives are object-based and provide more flexibility.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> CTS often asks follow-up questions about type casting \u2014 be ready to explain implicit vs explicit conversion.<\/p>\n<h3 data-start=\"170\" data-end=\"195\"><strong data-start=\"174\" data-end=\"195\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"197\" data-end=\"424\">What is the difference between <strong data-start=\"246\" data-end=\"288\">primitive and non-primitive data types<\/strong> in Java?<br data-start=\"297\" data-end=\"300\" \/><em data-start=\"300\" data-end=\"424\">(This tests if the candidate can explain memory allocation, default values, and object references \u2014 common CTS follow-up.)<\/em><\/li>\n<li data-start=\"431\" data-end=\"650\">How does <strong data-start=\"458\" data-end=\"474\">type casting<\/strong> work in Java? Explain with examples of <strong data-start=\"514\" data-end=\"547\">implicit and explicit casting<\/strong>.<br data-start=\"548\" data-end=\"551\" \/><em data-start=\"551\" data-end=\"650\">(Cognizant often checks understanding of conversion between <code data-start=\"612\" data-end=\"617\">int<\/code>, <code data-start=\"619\" data-end=\"627\">double<\/code>, and <code data-start=\"633\" data-end=\"641\">String<\/code> types.)<\/em><\/li>\n<li data-start=\"657\" data-end=\"834\">What is <strong data-start=\"683\" data-end=\"710\">autoboxing and unboxing<\/strong> in Java? Give an example.<br data-start=\"736\" data-end=\"739\" \/><em data-start=\"739\" data-end=\"834\">(This connects data types with wrapper classes\u2014frequently asked in Java rounds at Cognizant.)<\/em><\/li>\n<li data-start=\"841\" data-end=\"1036\">What is the <strong data-start=\"871\" data-end=\"888\">default value<\/strong> of primitive data types in Java (e.g., <code data-start=\"928\" data-end=\"933\">int<\/code>, <code data-start=\"935\" data-end=\"944\">boolean<\/code>, <code data-start=\"946\" data-end=\"953\">float<\/code>)?<br data-start=\"955\" data-end=\"958\" \/><em data-start=\"958\" data-end=\"1036\">(Tests memory handling and initialization knowledge \u2014 simple but practical.)<\/em><\/li>\n<li data-start=\"1043\" data-end=\"1252\">Explain the difference between <strong data-start=\"1092\" data-end=\"1102\">String<\/strong>, <strong data-start=\"1104\" data-end=\"1121\">StringBuilder<\/strong>, and <strong data-start=\"1127\" data-end=\"1143\">StringBuffer<\/strong> in Java.<br data-start=\"1152\" data-end=\"1155\" \/><em data-start=\"1155\" data-end=\"1252\">(Interviewers often link this to <code data-start=\"1189\" data-end=\"1211\">data type mutability<\/code> and performance \u2014 a real CTS favorite.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_2_Define_an_Array_data_type\"><\/span><strong>Question:<\/strong><strong>2. Define an Array data type?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>An Array is a collection of elements of the same data type stored in contiguous memory locations. It helps in storing multiple values under a single variable name, reducing redundancy. Arrays have a fixed size, meaning the number of elements cannot change once declared. They are useful for handling large datasets efficiently using indexes.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Prepare to explain Array vs ArrayList \u2014 a common CTS favorite.<\/p>\n<p><strong>Additional Resources:<\/strong> <a href=\"https:\/\/www.testleaf.com\/blog\/selenium-interview-questions\/\">selenium interview questions<\/a><\/p>\n<h3 data-start=\"132\" data-end=\"157\"><strong data-start=\"136\" data-end=\"157\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"159\" data-end=\"361\">What is the difference between <strong data-start=\"208\" data-end=\"256\">one-dimensional and multi-dimensional arrays<\/strong> in Java?<br data-start=\"265\" data-end=\"268\" \/><em data-start=\"268\" data-end=\"361\">(Common Cognizant follow-up to test understanding of memory layout and declaration syntax.)<\/em><\/li>\n<li data-start=\"159\" data-end=\"361\">How do you <strong data-start=\"397\" data-end=\"428\">initialize an array in Java<\/strong>? Explain all possible ways with examples.<br data-start=\"470\" data-end=\"473\" \/><em data-start=\"473\" data-end=\"553\">(Tests knowledge of declaration, instantiation, and shorthand initialization.)<\/em><\/li>\n<li data-start=\"560\" data-end=\"766\">What happens if you try to <strong data-start=\"605\" data-end=\"644\">access an array index out of bounds<\/strong> in Java?<br data-start=\"653\" data-end=\"656\" \/><em data-start=\"656\" data-end=\"766\">(CTS interviewers frequently ask about <code data-start=\"696\" data-end=\"728\">ArrayIndexOutOfBoundsException<\/code> to check exception-handling basics.)<\/em><\/li>\n<li data-start=\"560\" data-end=\"766\">How do you <strong data-start=\"802\" data-end=\"819\">copy elements<\/strong> from one array to another in Java?<br data-start=\"854\" data-end=\"857\" \/><em data-start=\"857\" data-end=\"961\">(Focus on <code data-start=\"868\" data-end=\"888\">System.arraycopy()<\/code>, <code data-start=\"890\" data-end=\"907\">Arrays.copyOf()<\/code>, and manual loops \u2014 shows practical coding ability.)<\/em><\/li>\n<li data-start=\"773\" data-end=\"961\">What is the difference between <strong data-start=\"1017\" data-end=\"1026\">Array<\/strong> and <strong data-start=\"1031\" data-end=\"1044\">ArrayList<\/strong> in Java?<br data-start=\"1053\" data-end=\"1056\" \/><em data-start=\"1056\" data-end=\"1169\">(A high-value Cognizant question that tests understanding of fixed vs dynamic size, performance, and generics.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_3_What_are_access_modifiers_and_its_types\"><\/span><strong>Question:<\/strong><strong>3. What are access modifiers and its types?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Access modifiers in Java define the visibility or scope of variables, methods, and classes. There are four types: public \u2013 accessible from anywhere, protected \u2013 accessible within the package and by subclasses, default \u2013 accessible only within the same package, and private \u2013 accessible only within the same class. They help in maintaining encapsulation and controlling data access.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Expect scenario-based questions like \u201cWhen would you use protected over private?\u201d<\/p>\n<h3 data-start=\"930\" data-end=\"955\"><strong data-start=\"934\" data-end=\"955\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"957\" data-end=\"1136\">What is the difference between public, private, and protected access modifiers in Java?<br data-start=\"1044\" data-end=\"1047\" \/><em data-start=\"1047\" data-end=\"1134\">(A frequent CTS follow-up to test understanding of visibility and inheritance scope.)<\/em><\/li>\n<li data-start=\"1138\" data-end=\"1310\">Can a constructor be declared as private in Java? If yes, where is it used?<br data-start=\"1213\" data-end=\"1216\" \/><em data-start=\"1216\" data-end=\"1308\">(Checks real-world use cases like Singleton design pattern \u2014 a common Cognizant favorite.)<\/em><\/li>\n<li data-start=\"1312\" data-end=\"1462\">What is the default access modifier in Java and when should you use it?<br data-start=\"1383\" data-end=\"1386\" \/><em data-start=\"1386\" data-end=\"1460\">(Tests conceptual clarity about package-level access and encapsulation.)<\/em><\/li>\n<li data-start=\"1464\" data-end=\"1611\">Can you override a private or static method in Java?<br data-start=\"1516\" data-end=\"1519\" \/><em data-start=\"1519\" data-end=\"1609\">(Evaluates the candidate\u2019s understanding of method overriding and compile-time binding.)<\/em><\/li>\n<li data-start=\"1613\" data-end=\"1787\">How do access modifiers affect inheritance between classes in different packages?<br data-start=\"1694\" data-end=\"1697\" \/><em data-start=\"1697\" data-end=\"1785\">(Tests knowledge of subclass accessibility \u2014 a typical mid-level CTS interview topic.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_4_Explain_static_and_non-static_class_members\"><\/span><strong>Question:<\/strong><strong>4. Explain static and non-static class members?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Static members belong to the class rather than any instance, meaning they can be accessed without object creation. They are used for shared resources like constants or utility methods. Non-static members belong to objects, requiring an instance for access. Static variables have a single memory allocation, while non-static ones have separate copies per object.<\/p>\n<p>Example :<\/p>\n<p><code>public class Example {<br \/>\nstatic int totalCount = 0; \/\/ Static variable shared by all objects<br \/>\nint instanceCount = 0; \/\/ Non-static variable unique to each object<\/code><\/p>\n<p><code>static void displayStatic() {<br \/>\nSystem.out.println(\"This is a static method\");<br \/>\n}<\/code><\/p>\n<p><code>void displayInstance() {<br \/>\nSystem.out.println(\"This is a non-static (instance) method\");<br \/>\n}<br \/>\n}<br \/>\n<\/code><\/p>\n<p>Here, <code data-start=\"1152\" data-end=\"1164\">totalCount<\/code> and <code data-start=\"1169\" data-end=\"1186\">displayStatic()<\/code> belong to the class, while <code data-start=\"1214\" data-end=\"1229\">instanceCount<\/code> and <code data-start=\"1234\" data-end=\"1253\">displayInstance()<\/code> belong to each object.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Be ready to explain memory usage or real examples like utility methods in Selenium.<\/p>\n<h3 data-start=\"1283\" data-end=\"1308\"><strong data-start=\"1287\" data-end=\"1308\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"1310\" data-end=\"1481\">What is the difference between static and instance variables in Java?<br data-start=\"1379\" data-end=\"1382\" \/><em data-start=\"1382\" data-end=\"1479\">(Common Cognizant follow-up to test understanding of memory allocation and object-level scope.)<\/em><\/li>\n<li data-start=\"1483\" data-end=\"1651\">Can a static method access non-static variables in Java?<br data-start=\"1539\" data-end=\"1542\" \/><em data-start=\"1542\" data-end=\"1649\">(Checks conceptual clarity of object context and compiler restrictions \u2014 a frequent CTS interview check.)<\/em><\/li>\n<li data-start=\"1653\" data-end=\"1788\">Why is the main() method declared as static in Java?<br data-start=\"1705\" data-end=\"1708\" \/><em data-start=\"1708\" data-end=\"1786\">(Tests knowledge of how the JVM starts execution without needing an object.)<\/em><\/li>\n<li data-start=\"1790\" data-end=\"1949\">Can static methods be overridden in Java? Explain why or why not.<br data-start=\"1855\" data-end=\"1858\" \/><em data-start=\"1858\" data-end=\"1947\">(A practical CTS favorite to test the difference between overriding and method hiding.)<\/em><\/li>\n<li data-start=\"1951\" data-end=\"2097\">What are static blocks in Java and when are they executed?<br data-start=\"2009\" data-end=\"2012\" \/><em data-start=\"2012\" data-end=\"2095\">(Evaluates knowledge of class loading, initialization order, and execution flow.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_5_What_is_a_constructor_and_its_types\"><\/span><strong>Question:<\/strong><strong>5. What is a constructor and its types?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>A constructor is a special method that initializes an object when it is created. It has the same name as the class and no return type.<\/p>\n<p>There are two types:<\/p>\n<ul>\n<li>Default Constructor (created automatically) and<\/li>\n<li>Parameterized Constructor (accepts arguments).<\/li>\n<\/ul>\n<p>Constructors help set initial values for object properties at the time of creation.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Mention how Selenium <a href=\"https:\/\/www.testleaf.com\/blog\/mastering-page-object-model-pom-in-selenium-a-practical-guide-with-real-examples\/\">Page Object Model (POM)<\/a> uses constructors for web element initialization.<\/p>\n<h3 data-start=\"1091\" data-end=\"1116\"><strong data-start=\"1095\" data-end=\"1116\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"1118\" data-end=\"1282\">What is the difference between a constructor and a method in Java?<br data-start=\"1184\" data-end=\"1187\" \/><em data-start=\"1187\" data-end=\"1280\">(Common Cognizant follow-up to test understanding of return types, naming, and invocation.)<\/em><\/li>\n<li data-start=\"1284\" data-end=\"1417\">Can a constructor be overloaded in Java?<br data-start=\"1324\" data-end=\"1327\" \/><em data-start=\"1327\" data-end=\"1415\">(Checks knowledge of compile-time polymorphism \u2014 often asked in CTS technical rounds.)<\/em><\/li>\n<li data-start=\"1419\" data-end=\"1586\">What happens if you define a parameterized constructor but no default constructor?<br data-start=\"1501\" data-end=\"1504\" \/><em data-start=\"1504\" data-end=\"1584\">(Evaluates understanding of compiler behavior and object instantiation rules.)<\/em><\/li>\n<li data-start=\"1588\" data-end=\"1751\">Can a constructor be private in Java? Give an example.<br data-start=\"1642\" data-end=\"1645\" \/><em data-start=\"1645\" data-end=\"1749\">(Tests understanding of Singleton or Factory design patterns \u2014 a popular Cognizant scenario question.)<\/em><\/li>\n<li data-start=\"1753\" data-end=\"1893\">What is constructor chaining in Java?<br data-start=\"1790\" data-end=\"1793\" \/><em data-start=\"1793\" data-end=\"1891\">(Examines the candidate\u2019s grasp of <code data-start=\"1829\" data-end=\"1837\">this()<\/code> and <code data-start=\"1842\" data-end=\"1851\">super()<\/code> calls for object initialization flow.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_6_What_is_inheritance_and_its_types\"><\/span><strong>Question:<\/strong><strong>6. What is inheritance and its types?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Inheritance allows one class to use the properties and methods of another, promoting code reusability. It forms an &#8216;is-a&#8217; relationship between classes.<\/p>\n<p>Types of inheritance include<\/p>\n<ul>\n<li>Single,<\/li>\n<li>Multilevel,<\/li>\n<li>Hierarchical, and<\/li>\n<li>Hybrid.<\/li>\n<\/ul>\n<p>It enhances code maintainability and reduces redundancy in object-oriented programming.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Connect to Selenium \u2014 explain how WebDriver interface is extended by multiple driver classes.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"179\">What is the purpose of inheritance in Java?<br data-start=\"70\" data-end=\"73\" \/><em data-start=\"73\" data-end=\"177\">(Common Cognizant follow-up to test understanding of code reusability and hierarchical relationships.)<\/em><\/li>\n<li data-start=\"181\" data-end=\"365\">What are the different types of inheritance in Java?<br data-start=\"233\" data-end=\"236\" \/><em data-start=\"236\" data-end=\"363\">(Checks if the candidate knows about single, multilevel, hierarchical, and why multiple inheritance is avoided with classes.)<\/em><\/li>\n<li data-start=\"367\" data-end=\"526\">Why is multiple inheritance not supported in Java using classes?<br data-start=\"431\" data-end=\"434\" \/><em data-start=\"434\" data-end=\"524\">(Tests conceptual clarity about the diamond problem and ambiguity in method resolution.)<\/em><\/li>\n<li data-start=\"528\" data-end=\"681\">How does inheritance work with constructors in Java?<br data-start=\"580\" data-end=\"583\" \/><em data-start=\"583\" data-end=\"679\">(Evaluates understanding of the <code data-start=\"616\" data-end=\"625\">super()<\/code> call and constructor chaining in subclass creation.)<\/em><\/li>\n<li data-start=\"683\" data-end=\"836\">What is the difference between inheritance and composition in Java?<br data-start=\"750\" data-end=\"753\" \/><em data-start=\"753\" data-end=\"836\" data-is-last-node=\"\">(A higher-level CTS question to assess design thinking and code maintainability.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_7_What_is_the_Object_class_in_Java\"><\/span><strong>Question:<\/strong><strong>7. What is the Object class in Java?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>The Object class is the parent of all classes in Java, forming the root of the class hierarchy. Every class in Java either directly or indirectly inherits from the Object class.<\/p>\n<p>It provides key methods like<\/p>\n<ul>\n<li>toString(),<\/li>\n<li>equals(),<\/li>\n<li>hashCode(), and<\/li>\n<li>clone().<\/li>\n<\/ul>\n<p>These methods enable basic object operations such as comparison, cloning, and conversion to string.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Know how equals() is used in comparing WebElement text in Selenium.<\/p>\n<h3 data-start=\"1423\" data-end=\"1448\"><strong data-start=\"1427\" data-end=\"1448\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"1450\" data-end=\"1602\">Why is the Object class considered the root class in Java?<br data-start=\"1508\" data-end=\"1511\" \/><em data-start=\"1511\" data-end=\"1600\">(Common Cognizant follow-up to check understanding of class hierarchy and inheritance.)<\/em><\/li>\n<li data-start=\"1604\" data-end=\"1763\">What are the commonly overridden methods of the Object class?<br data-start=\"1665\" data-end=\"1668\" \/><em data-start=\"1668\" data-end=\"1761\">(Tests awareness of <code data-start=\"1689\" data-end=\"1699\">equals()<\/code>, <code data-start=\"1701\" data-end=\"1713\">hashCode()<\/code>, and <code data-start=\"1719\" data-end=\"1731\">toString()<\/code> usage in real-world coding.)<\/em><\/li>\n<li data-start=\"1765\" data-end=\"1919\">What is the purpose of the equals() and hashCode() methods?<br data-start=\"1824\" data-end=\"1827\" \/><em data-start=\"1827\" data-end=\"1917\">(A frequent CTS interview topic focusing on object comparison and collections behavior.)<\/em><\/li>\n<li data-start=\"1921\" data-end=\"2057\">Can we override the clone() method in Java? How is it used?<br data-start=\"1980\" data-end=\"1983\" \/><em data-start=\"1983\" data-end=\"2055\">(Evaluates knowledge of object cloning and the <code data-start=\"2031\" data-end=\"2042\">Cloneable<\/code> interface.)<\/em><\/li>\n<li data-start=\"2059\" data-end=\"2196\">What is the difference between getClass() and instanceof in Java?<br data-start=\"2124\" data-end=\"2127\" \/><em data-start=\"2127\" data-end=\"2194\">(Assesses understanding of runtime type checking and reflection.)<\/em><\/li>\n<\/ol>\n<p><a href=\"https:\/\/www.testleaf.com\/course\/selenium-automation-certification-training-course.html?utm_source=blog-post&amp;utm_medium=Organic&amp;utm_campaign=Blog_Post\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-5159 size-full\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium.jpg\" alt=\"Selenium training in chennai\" width=\"2048\" height=\"512\" srcset=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium.jpg 2048w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium-300x75.jpg 300w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium-1024x256.jpg 1024w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium-768x192.jpg 768w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium-1536x384.jpg 1536w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium-150x38.jpg 150w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Question_8_What_is_an_exception_and_its_types_How_to_handle_it\"><\/span><strong>Question:<\/strong><strong>8. What is an exception and its types? How to handle it?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>An exception is an event that disrupts the normal flow of a program during runtime.<\/p>\n<p>There are two main types:<\/p>\n<ul>\n<li>Checked exceptions (compile-time) and<\/li>\n<li>Unchecked exceptions (runtime).<\/li>\n<\/ul>\n<p>Java handles exceptions using try-catch-finally blocks or by declaring them with the throws keyword. Proper exception handling ensures smooth program execution and better fault tolerance.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> CTS might ask for real-time scenarios like handling <em><strong>NoSuchElementException.<\/strong><\/em><\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"200\">What is the difference between checked and unchecked exceptions in Java?<br data-start=\"99\" data-end=\"102\" \/><em data-start=\"102\" data-end=\"198\">(Common Cognizant follow-up to test understanding of compile-time vs. runtime error handling.)<\/em><\/li>\n<li data-start=\"202\" data-end=\"361\">What is the difference between throw and throws in Java?<br data-start=\"258\" data-end=\"261\" \/><em data-start=\"261\" data-end=\"359\">(Evaluates knowledge of exception declaration and propagation \u2014 a frequent CTS coding question.)<\/em><\/li>\n<li data-start=\"363\" data-end=\"539\">What are the key differences between try-catch-finally and try-with-resources?<br data-start=\"441\" data-end=\"444\" \/><em data-start=\"444\" data-end=\"537\">(Tests understanding of resource management and modern Java exception handling techniques.)<\/em><\/li>\n<li data-start=\"541\" data-end=\"693\">Can we have multiple catch blocks in Java? How are they executed?<br data-start=\"606\" data-end=\"609\" \/><em data-start=\"609\" data-end=\"691\">(Checks logical flow of exception handling and subclass\u2013superclass catch order.)<\/em><\/li>\n<li data-start=\"695\" data-end=\"846\">What happens if an exception occurs in the finally block?<br data-start=\"752\" data-end=\"755\" \/><em data-start=\"755\" data-end=\"846\" data-is-last-node=\"\">(Advanced CTS scenario to test deep understanding of JVM behavior during exception flow.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_9_What_is_polymorphism_and_its_types\"><\/span><strong>Question:<\/strong><strong>9. What is polymorphism and its types?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Polymorphism means &#8216;many forms,&#8217; allowing a single method or object to behave differently based on context.<\/p>\n<p>It is of two types:<\/p>\n<ul>\n<li>Compile-time polymorphism (method overloading) and<\/li>\n<li>Runtime polymorphism (method overriding).<\/li>\n<\/ul>\n<p>This concept improves code flexibility and reusability. It is one of the core principles of <a href=\"https:\/\/en.wikipedia.org\/wiki\/Object-oriented_programming\">Object-Oriented Programming<\/a>.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Give examples using Selenium actions or Page Object overrides.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"173\">What are the two types of polymorphism in Java?<br data-start=\"74\" data-end=\"77\" \/><em data-start=\"77\" data-end=\"171\">(Common Cognizant follow-up to test understanding of compile-time and runtime polymorphism.)<\/em><\/li>\n<li data-start=\"175\" data-end=\"336\">What is the difference between method overloading and method overriding?<br data-start=\"247\" data-end=\"250\" \/><em data-start=\"250\" data-end=\"334\">(Frequently asked CTS question to evaluate practical application of polymorphism.)<\/em><\/li>\n<li data-start=\"338\" data-end=\"472\">Can constructors be overloaded or overridden in Java?<br data-start=\"391\" data-end=\"394\" \/><em data-start=\"394\" data-end=\"470\">(Checks conceptual clarity of constructor behavior in polymorphic design.)<\/em><\/li>\n<li data-start=\"474\" data-end=\"602\">How does dynamic method dispatch work in Java?<br data-start=\"520\" data-end=\"523\" \/><em data-start=\"523\" data-end=\"600\">(Tests deep understanding of runtime polymorphism and JVM decision-making.)<\/em><\/li>\n<li data-start=\"604\" data-end=\"763\">What is the role of the <code data-start=\"628\" data-end=\"635\">super<\/code> and <code data-start=\"640\" data-end=\"646\">this<\/code> keywords in polymorphism?<br data-start=\"672\" data-end=\"675\" \/><em data-start=\"675\" data-end=\"763\" data-is-last-node=\"\">(Evaluates knowledge of method resolution and access to parent class implementations.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_10_What_is_an_abstract_class_and_example_in_Java_and_Selenium\"><\/span><strong>Question:<\/strong><strong>10. What is an abstract class and example in Java and Selenium?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>An abstract class is a class that cannot be instantiated and can contain both abstract and concrete methods. It provides a partial implementation that subclasses can extend. Abstract classes are used when multiple subclasses share a common structure but have different implementations. They help achieve abstraction and reduce code duplication.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Relate it to framework design \u2014 like abstract BaseTest classes in Selenium projects.<\/p>\n<p><strong>Explore Similar Topics:<\/strong> <a href=\"https:\/\/www.testleaf.com\/blog\/2025-top-automation-testing-infosys-interview-questions-with-expert-answers-from-testleaf-for-2-to-5-years-experience\/\">automation testing interview questions<\/a><\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"208\">What is the difference between an abstract class and an interface in Java?<br data-start=\"101\" data-end=\"104\" \/><em data-start=\"104\" data-end=\"206\">(Frequently asked in CTS interviews to check understanding of abstraction and multiple inheritance.)<\/em><\/li>\n<li data-start=\"210\" data-end=\"356\">Can an abstract class have a constructor in Java?<br data-start=\"259\" data-end=\"262\" \/><em data-start=\"262\" data-end=\"354\">(Common CTS follow-up to test knowledge of object initialization and superclass chaining.)<\/em><\/li>\n<li data-start=\"358\" data-end=\"511\">Can an abstract class have both abstract and non-abstract methods?<br data-start=\"424\" data-end=\"427\" \/><em data-start=\"427\" data-end=\"509\">(Cognizant often asks this to evaluate practical design skills in OOP concepts.)<\/em><\/li>\n<li data-start=\"513\" data-end=\"690\">Can we create an object of an abstract class? If not, how can we use it?<br data-start=\"585\" data-end=\"588\" \/><em data-start=\"588\" data-end=\"688\">(A regular CTS conceptual question focusing on abstract class instantiation through polymorphism.)<\/em><\/li>\n<li data-start=\"692\" data-end=\"883\">How are abstract classes used in Selenium framework design?<br data-start=\"751\" data-end=\"754\" \/><em data-start=\"754\" data-end=\"883\" data-is-last-node=\"\">(A CTS-specific applied question that checks if candidates understand real-time usage of abstraction in automation frameworks.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_11_What_is_an_interface_and_example_in_Java_and_Selenium\"><\/span><strong>Question:<\/strong><strong>11. What is an interface and example in Java and Selenium?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>An interface is a blueprint of a class that defines abstract methods without implementation. It helps achieve complete abstraction and multiple inheritance. A class implementing an interface must provide implementations for all its methods. Interfaces are widely used for defining standard behaviors across multiple classes.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Mention the <a href=\"https:\/\/www.testleaf.com\/blog\/types-of-frameworks-in-selenium-webdriver\/\">WebDriver<\/a> interface as an example.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"203\">What is the difference between an interface and an abstract class in Java?<br data-start=\"101\" data-end=\"104\" \/><em data-start=\"104\" data-end=\"201\">(A common CTS follow-up to test understanding of abstraction and multiple inheritance support.)<\/em><\/li>\n<li data-start=\"205\" data-end=\"387\">Can an interface have default and static methods in Java?<br data-start=\"262\" data-end=\"265\" \/><em data-start=\"265\" data-end=\"385\">(Frequently asked in Cognizant interviews to assess knowledge of modern Java features introduced from Java 8 onwards.)<\/em><\/li>\n<li data-start=\"389\" data-end=\"531\">Can one interface extend another interface in Java?<br data-start=\"440\" data-end=\"443\" \/><em data-start=\"443\" data-end=\"529\">(Tests the candidate\u2019s understanding of interface inheritance and code reusability.)<\/em><\/li>\n<li data-start=\"533\" data-end=\"730\">How is an interface implemented in Selenium WebDriver?<br data-start=\"587\" data-end=\"590\" \/><em data-start=\"590\" data-end=\"728\">(Cognizant often asks this to check real-world application of interfaces like <code data-start=\"669\" data-end=\"680\">WebDriver<\/code>, <code data-start=\"682\" data-end=\"699\">TakesScreenshot<\/code>, and <code data-start=\"705\" data-end=\"725\">JavascriptExecutor<\/code>.)<\/em><\/li>\n<li data-start=\"732\" data-end=\"919\">Can a class implement multiple interfaces in Java? How is ambiguity resolved?<br data-start=\"809\" data-end=\"812\" \/><em data-start=\"812\" data-end=\"919\" data-is-last-node=\"\">(Evaluates understanding of multiple inheritance through interfaces \u2014 a popular CTS conceptual question.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_12_Explain_List_and_Set_and_their_implementation_classes\"><\/span><strong>Question:<\/strong><strong>12. Explain List and Set and their implementation classes?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>A List is an ordered collection that allows duplicate elements,\u00a0whereas a Set is unordered and doesn\u2019t allow duplicates.<\/p>\n<p>Common implementations of List include<\/p>\n<ul>\n<li>ArrayList,<\/li>\n<li>LinkedList, and<\/li>\n<li>Vector.<\/li>\n<\/ul>\n<p>Set is implemented by<\/p>\n<ul>\n<li>HashSet,<\/li>\n<li>LinkedHashSet, and<\/li>\n<li>TreeSet.<\/li>\n<\/ul>\n<p>These collections simplify data storage, searching, and manipulation.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> CTS often asks how to store unique locators or test data \u2014 Set is your answer.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"184\">What is the difference between List and Set in Java?<br data-start=\"79\" data-end=\"82\" \/><em data-start=\"82\" data-end=\"182\">(A very common CTS question to test understanding of duplicates, ordering, and indexing behavior.)<\/em><\/li>\n<li>What are the main implementation classes of List and Set interfaces?<br data-start=\"254\" data-end=\"257\" \/><em data-start=\"257\" data-end=\"373\">(Cognizant often asks this to check if candidates know <code data-start=\"313\" data-end=\"324\">ArrayList<\/code>, <code data-start=\"326\" data-end=\"338\">LinkedList<\/code>, <code data-start=\"340\" data-end=\"349\">HashSet<\/code>, and <code data-start=\"355\" data-end=\"364\">TreeSet<\/code> usage.)<\/em><\/li>\n<li data-start=\"377\" data-end=\"526\">How does HashSet maintain uniqueness of elements?<br data-start=\"426\" data-end=\"429\" \/><em data-start=\"429\" data-end=\"524\">(Tests conceptual clarity about hashing and the role of <code data-start=\"486\" data-end=\"498\">hashCode()<\/code> and <code data-start=\"503\" data-end=\"513\">equals()<\/code> methods.)<\/em><\/li>\n<li data-start=\"528\" data-end=\"702\">When would you use ArrayList over LinkedList in Java?<br data-start=\"581\" data-end=\"584\" \/><em data-start=\"584\" data-end=\"700\">(Evaluates practical knowledge of time complexity and performance differences \u2014 a frequent CTS scenario question.)<\/em><\/li>\n<li data-start=\"704\" data-end=\"868\">What is the difference between HashSet and TreeSet in Java?<br data-start=\"763\" data-end=\"766\" \/><em data-start=\"766\" data-end=\"868\" data-is-last-node=\"\">(Common CTS follow-up to assess understanding of ordering, sorting, and underlying data structures.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_13_What_are_the_different_types_of_locators_in_Selenium\"><\/span><strong>Question:<\/strong><strong>13. What are the different types of locators in Selenium?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Locators are used to identify web elements in Selenium.<\/p>\n<p>The<em><strong> eight main types<\/strong><\/em> are<\/p>\n<ul>\n<li>ID,<\/li>\n<li>Name,<\/li>\n<li>ClassName,<\/li>\n<li>TagName,<\/li>\n<li>LinkText,<\/li>\n<li>PartialLinkText,<\/li>\n<li>XPath, and<\/li>\n<li>CSS Selector.<\/li>\n<\/ul>\n<p>Choosing the correct locator improves test accuracy and reduces flakiness. Among these, ID is considered the most reliable and fastest.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Always mention XPath as a backup and ID as the fastest.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"194\">Which locator is considered the fastest and most reliable in Selenium?<br data-start=\"97\" data-end=\"100\" \/><em data-start=\"100\" data-end=\"192\">(A common CTS follow-up to test practical knowledge of locator performance and stability.)<\/em><\/li>\n<li data-start=\"196\" data-end=\"370\">What is the difference between XPath and CSS Selector in Selenium?<br data-start=\"262\" data-end=\"265\" \/><em data-start=\"265\" data-end=\"368\">(Frequently asked in Cognizant interviews to assess understanding of syntax, speed, and readability.)<\/em><\/li>\n<li data-start=\"372\" data-end=\"549\">How do you handle dynamic elements using XPath in Selenium?<br data-start=\"431\" data-end=\"434\" \/><em data-start=\"434\" data-end=\"547\">(Tests real-time problem-solving skills for automation on dynamic web pages \u2014 a popular CTS scenario question.)<\/em><\/li>\n<li data-start=\"551\" data-end=\"706\">What are relative and absolute XPath? Which one is preferred and why?<br data-start=\"620\" data-end=\"623\" \/><em data-start=\"623\" data-end=\"704\">(Checks candidate\u2019s conceptual clarity on XPath strategies and best practices.)<\/em><\/li>\n<li data-start=\"708\" data-end=\"888\">When should you prefer ID or Name over other locators in Selenium?<br data-start=\"774\" data-end=\"777\" \/><em data-start=\"777\" data-end=\"888\" data-is-last-node=\"\">(Evaluates understanding of locator priority and framework optimization \u2014 a typical CTS automation question.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_14_Difference_between_findElement_and_findElements\"><\/span><strong>Question:<\/strong><strong>14. Difference between findElement and findElements?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<ul>\n<li><em><strong>findElement()<\/strong><\/em> returns the first matching web element, throwing an exception if none are found.<\/li>\n<li><em><strong>findElements()<\/strong><\/em> returns a list of all matching elements, returning an empty list if none exist.<\/li>\n<\/ul>\n<p>The former is used for single element interactions, while the latter is for multiple. Using the right method ensures efficient element handling during automation.<\/p>\n<p>\ud83d\udca1<strong> Expert Tip:<\/strong> Mention how findElements() helps avoid flaky exceptions.<\/p>\n<p>&nbsp;<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"192\">What does the <code data-start=\"41\" data-end=\"56\">findElement()<\/code> method return if no matching element is found?<br data-start=\"103\" data-end=\"106\" \/><em data-start=\"106\" data-end=\"190\">(Common CTS follow-up to test understanding of <code data-start=\"154\" data-end=\"178\">NoSuchElementException<\/code> handling.)<\/em><\/li>\n<li data-start=\"194\" data-end=\"381\">What does the <code data-start=\"208\" data-end=\"224\">findElements()<\/code> method return when no elements are found?<br data-start=\"266\" data-end=\"269\" \/><em data-start=\"269\" data-end=\"379\">(Frequently asked in Cognizant interviews to check awareness of empty list behavior vs. exception handling.)<\/em><\/li>\n<li data-start=\"383\" data-end=\"541\">How can you handle <code data-start=\"402\" data-end=\"426\">NoSuchElementException<\/code> in Selenium effectively?<br data-start=\"451\" data-end=\"454\" \/><em data-start=\"454\" data-end=\"539\">(Tests practical exception handling techniques using waits and conditional checks.)<\/em><\/li>\n<li data-start=\"543\" data-end=\"731\">Can you use <code data-start=\"555\" data-end=\"571\">findElements()<\/code> to verify the presence of elements without throwing an exception?<br data-start=\"637\" data-end=\"640\" \/><em data-start=\"640\" data-end=\"729\">(A typical CTS scenario-based question to assess best practices in element validation.)<\/em><\/li>\n<li data-start=\"733\" data-end=\"956\">What is the difference between implicit wait and explicit wait when used with <code data-start=\"811\" data-end=\"826\">findElement()<\/code> and <code data-start=\"831\" data-end=\"847\">findElements()<\/code>?<br data-start=\"848\" data-end=\"851\" \/><em data-start=\"851\" data-end=\"956\" data-is-last-node=\"\">(Evaluates deeper understanding of synchronization in Selenium \u2014 a favorite Cognizant interview topic.)<\/em><\/li>\n<\/ol>\n<p><a href=\"https:\/\/www.testleaf.com\/course\/genai-qa-engineers-training-course.html?utm_source=blog-post&amp;utm_medium=Organic&amp;utm_campaign=Blog_Post\"><img decoding=\"async\" class=\"aligncenter wp-image-5555 size-full\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Babus-Gen-AI.png\" alt=\"Babu's Gen AI\" width=\"2048\" height=\"512\" srcset=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Babus-Gen-AI.png 2048w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Babus-Gen-AI-300x75.png 300w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Babus-Gen-AI-1024x256.png 1024w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Babus-Gen-AI-768x192.png 768w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Babus-Gen-AI-1536x384.png 1536w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Babus-Gen-AI-150x38.png 150w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Question_15_How_to_select_a_value_from_dropdown\"><\/span><strong>Question:<\/strong><strong>15. How to select a value from dropdown?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Dropdowns can be handled using a Select class that interacts with select tags. Values can be chosen by visible text, value, or index. This approach ensures flexibility when dealing with dynamic dropdowns. It\u2019s commonly used in forms and UI validation testing.<\/p>\n<p>\ud83d\udca1<strong> Expert Tip:<\/strong> Add a code snippet to impress interviewers:<\/p>\n<blockquote><p>Select dropdown = new Select(element);<\/p>\n<p>dropdown.selectByVisibleText(&#8220;Option&#8221;);<\/p><\/blockquote>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"230\">What are the different ways to select a value from a dropdown in Selenium?<br data-start=\"101\" data-end=\"104\" \/><em data-start=\"104\" data-end=\"228\">(Common CTS follow-up to test understanding of <code data-start=\"152\" data-end=\"175\">selectByVisibleText()<\/code>, <code data-start=\"177\" data-end=\"194\">selectByValue()<\/code>, and <code data-start=\"200\" data-end=\"217\">selectByIndex()<\/code> methods.)<\/em><\/li>\n<li data-start=\"232\" data-end=\"389\">How do you handle dynamic dropdowns in Selenium?<br data-start=\"280\" data-end=\"283\" \/><em data-start=\"283\" data-end=\"387\">(Frequently asked in Cognizant interviews to assess handling of AJAX-based or auto-suggest dropdowns.)<\/em><\/li>\n<li data-start=\"391\" data-end=\"547\">What is the difference between a static and dynamic dropdown in Selenium?<br data-start=\"464\" data-end=\"467\" \/><em data-start=\"467\" data-end=\"545\">(Checks candidate\u2019s conceptual understanding and real-time framework usage.)<\/em><\/li>\n<li data-start=\"549\" data-end=\"727\">Can you select multiple options from a dropdown in Selenium? How?<br data-start=\"614\" data-end=\"617\" \/><em data-start=\"617\" data-end=\"725\">(Evaluates knowledge of <code data-start=\"642\" data-end=\"656\">isMultiple()<\/code> and multi-select dropdown handling \u2014 a common CTS coding question.)<\/em><\/li>\n<li data-start=\"729\" data-end=\"904\">How do you handle dropdowns without using the Select class in Selenium?<br data-start=\"800\" data-end=\"803\" \/><em data-start=\"803\" data-end=\"904\" data-is-last-node=\"\">(Tests advanced problem-solving using <code data-start=\"842\" data-end=\"851\">click()<\/code> and <code data-start=\"856\" data-end=\"868\">sendKeys()<\/code> methods on custom HTML dropdowns.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_16_How_to_switch_to_different_frames\"><\/span><strong>Question:<\/strong><strong>16. How to switch to different frames?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Frames are used to divide a webpage into sections. To access elements inside a frame, Selenium must switch to it first. Switching can be done using the frame\u2019s index, name\/id, or WebElement. Proper frame handling ensures smooth interaction with complex web pages.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Combine with waits \u2014 frame switching often fails due to load delays.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"185\">What are the different ways to switch to a frame in Selenium?<br data-start=\"88\" data-end=\"91\" \/><em data-start=\"91\" data-end=\"183\">(Common CTS follow-up to test knowledge of switching using index, name\/id, or WebElement.)<\/em><\/li>\n<li data-start=\"187\" data-end=\"379\">How do you switch back to the main page after working inside a frame?<br data-start=\"256\" data-end=\"259\" \/><em data-start=\"259\" data-end=\"377\">(Frequently asked in Cognizant interviews to check understanding of <code data-start=\"328\" data-end=\"346\">defaultContent()<\/code> and <code data-start=\"351\" data-end=\"366\">parentFrame()<\/code> methods.)<\/em><\/li>\n<li data-start=\"381\" data-end=\"550\">What happens if you try to access an element without switching to its frame first?<br data-start=\"463\" data-end=\"466\" \/><em data-start=\"466\" data-end=\"548\">(Tests knowledge of <code data-start=\"487\" data-end=\"511\">NoSuchElementException<\/code> \u2014 a typical CTS scenario question.)<\/em><\/li>\n<li data-start=\"552\" data-end=\"711\">How do you handle nested frames in Selenium?<br data-start=\"596\" data-end=\"599\" \/><em data-start=\"599\" data-end=\"709\">(Evaluates practical understanding of multi-level frame switching using chained <code data-start=\"680\" data-end=\"700\">switchTo().frame()<\/code> calls.)<\/em><\/li>\n<li data-start=\"713\" data-end=\"875\">Can we use XPath to identify elements inside an iframe without switching to it?<br data-start=\"792\" data-end=\"795\" \/><em data-start=\"795\" data-end=\"875\" data-is-last-node=\"\">(Advanced CTS-level question to test real-world debugging and locator skills.)==<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_17_What_are_the_different_types_of_waits_in_Selenium\"><\/span><strong>Question:<\/strong><strong>17. What are the different types of waits in Selenium?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Waits handle synchronization between script execution and webpage response.<\/p>\n<p>There are three types:<\/p>\n<ul>\n<li>Implicit Wait,<\/li>\n<li>Explicit Wait, and<\/li>\n<li>Fluent Wait.<\/li>\n<\/ul>\n<p>They help prevent element not found errors by giving elements time to load. Choosing the right wait improves test stability and reliability.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> CTS focuses on synchronization \u2014 be clear on when to use which.<\/p>\n<p><strong>You Should Also Read:<\/strong> <a href=\"https:\/\/www.testleaf.com\/blog\/top-25-api-automation-engineer-interview-questionsin-2025-with-answers\/\">api automation interview questions<\/a><\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"212\">What is the difference between implicit wait and explicit wait in Selenium?<br data-start=\"102\" data-end=\"105\" \/><em data-start=\"105\" data-end=\"210\">(A frequently asked CTS question to test understanding of synchronization handling and wait hierarchy.)<\/em><\/li>\n<li data-start=\"214\" data-end=\"377\">When should you prefer explicit wait over implicit wait in Selenium?<br data-start=\"282\" data-end=\"285\" \/><em data-start=\"285\" data-end=\"375\">(Common Cognizant follow-up to assess real-time decision-making in dynamic web testing.)<\/em><\/li>\n<li data-start=\"379\" data-end=\"527\">How does Fluent Wait differ from Explicit Wait in Selenium?<br data-start=\"438\" data-end=\"441\" \/><em data-start=\"441\" data-end=\"525\">(Tests candidate\u2019s clarity on polling frequency, timeout, and exception handling.)<\/em><\/li>\n<li data-start=\"529\" data-end=\"728\">What happens if both implicit and explicit waits are used together in a Selenium script?<br data-start=\"617\" data-end=\"620\" \/><em data-start=\"620\" data-end=\"726\">(A tricky CTS conceptual question to check understanding of potential conflicts and performance issues.)<\/em><\/li>\n<li data-start=\"730\" data-end=\"941\">How do you handle synchronization issues for AJAX-based or dynamically loaded elements in Selenium?<br data-start=\"829\" data-end=\"832\" \/><em data-start=\"832\" data-end=\"941\" data-is-last-node=\"\">(Evaluates practical experience in dealing with real-world wait scenarios \u2014 a popular CTS interview topic.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_18_How_to_handle_multiple_windows\"><\/span><strong>Question:<\/strong><strong>18. How to handle multiple windows?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>When multiple browser windows or tabs open, Selenium can switch between them using window handles. The driver stores unique IDs for each window and allows switching using those handles. This is essential when dealing with pop-ups, advertisements, or multi-step flows. Efficient window handling ensures complete test coverage for complex web apps.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Demonstrate closing popups dynamically in automation.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"200\">How do you get the window handles of all open browser windows in Selenium?<br data-start=\"101\" data-end=\"104\" \/><em data-start=\"104\" data-end=\"198\">(Common CTS follow-up to test knowledge of <code data-start=\"148\" data-end=\"168\">getWindowHandles()<\/code> method and iteration logic.)<\/em><\/li>\n<li data-start=\"202\" data-end=\"405\">What is the difference between <code data-start=\"233\" data-end=\"252\">getWindowHandle()<\/code> and <code data-start=\"257\" data-end=\"277\">getWindowHandles()<\/code> in Selenium?<br data-start=\"290\" data-end=\"293\" \/><em data-start=\"293\" data-end=\"403\">(Frequently asked in Cognizant interviews to assess understanding of single vs. multiple window management.)<\/em><\/li>\n<li data-start=\"407\" data-end=\"584\">How do you switch control to a newly opened browser tab or popup window?<br data-start=\"479\" data-end=\"482\" \/><em data-start=\"482\" data-end=\"582\">(Tests candidate\u2019s ability to use window handles dynamically \u2014 a practical CTS scenario question.)<\/em><\/li>\n<li data-start=\"586\" data-end=\"759\">How can you close only the child window and return to the parent window in Selenium?<br data-start=\"670\" data-end=\"673\" \/><em data-start=\"673\" data-end=\"757\">(Evaluates understanding of <code data-start=\"702\" data-end=\"711\">close()<\/code> vs. <code data-start=\"716\" data-end=\"724\">quit()<\/code> methods and context switching.)<\/em><\/li>\n<li data-start=\"761\" data-end=\"941\">How do you handle multiple windows when their titles or URLs are dynamic?<br data-start=\"834\" data-end=\"837\" \/><em data-start=\"837\" data-end=\"941\" data-is-last-node=\"\">(A real-time Cognizant question to check problem-solving using conditional loops and string matching.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_19_Usage_of_Jenkins_and_Maven\"><\/span><strong>Question:<\/strong><strong>19. Usage of <em>Jenkins<\/em> and <em>Maven<\/em>?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Jenkins is a Continuous Integration tool that automates test execution and reporting. Maven is a build automation tool used for dependency management and project setup. Together, they <strong><em>streamline automation workflows and ensure continuous delivery<\/em><\/strong>. They are integral to modern DevOps-based testing pipelines.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Explain how Jenkins executes your Selenium tests automatically after each commit.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"195\">How do Jenkins and Maven work together in a Selenium automation framework?<br data-start=\"101\" data-end=\"104\" \/><em data-start=\"104\" data-end=\"193\">(Common CTS follow-up to test understanding of CI\/CD integration and build automation.)<\/em><\/li>\n<li data-start=\"197\" data-end=\"375\">What is the role of the <code data-start=\"221\" data-end=\"230\">pom.xml<\/code> file in a Maven project?<br data-start=\"255\" data-end=\"258\" \/><em data-start=\"258\" data-end=\"373\">(Frequently asked in Cognizant interviews to check knowledge of dependency management and project configuration.)<\/em><\/li>\n<li data-start=\"377\" data-end=\"541\">How can you schedule Selenium test execution using Jenkins?<br data-start=\"436\" data-end=\"439\" \/><em data-start=\"439\" data-end=\"539\">(Tests practical experience in automating test runs through Jenkins pipelines or cron scheduling.)<\/em><\/li>\n<li data-start=\"543\" data-end=\"712\">What are the benefits of integrating Jenkins with Git and Selenium?<br data-start=\"610\" data-end=\"613\" \/><em data-start=\"613\" data-end=\"710\">(Evaluates understanding of continuous integration workflows \u2014 a favorite CTS interview topic.)<\/em><\/li>\n<li data-start=\"714\" data-end=\"912\">How do you configure Maven commands in Jenkins to build and run tests automatically?<br data-start=\"798\" data-end=\"801\" \/><em data-start=\"801\" data-end=\"912\" data-is-last-node=\"\">(Assesses real-world knowledge of Jenkins job setup, Maven goals, and post-build actions in CI environments.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_20_How_to_perform_double_click_in_Selenium\"><\/span><strong>Question:<\/strong><strong>20. How to perform double click in Selenium?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>A double-click action simulates rapid clicks on a web element. It is mainly used for UI actions like text selection or special triggers. This is performed using action classes that handle advanced mouse interactions. It\u2019s crucial for automating real-user behaviors on web pages.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip<\/strong>: Mention other real-time actions like hover or drag-and-drop.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"194\">How do you perform right-click (context click) in Selenium?<br data-start=\"86\" data-end=\"89\" \/><em data-start=\"89\" data-end=\"192\">(Common CTS follow-up to test understanding of advanced user interactions using the <code data-start=\"174\" data-end=\"183\">Actions<\/code> class.)<\/em><\/li>\n<li data-start=\"196\" data-end=\"371\">What is the purpose of the <code data-start=\"223\" data-end=\"232\">Actions<\/code> class in Selenium?<br data-start=\"251\" data-end=\"254\" \/><em data-start=\"254\" data-end=\"369\">(Frequently asked in Cognizant interviews to assess knowledge of handling complex mouse and keyboard operations.)<\/em><\/li>\n<li data-start=\"373\" data-end=\"533\">How can you perform a mouse hover action on a web element in Selenium?<br data-start=\"443\" data-end=\"446\" \/><em data-start=\"446\" data-end=\"531\">(Tests real-time automation skills for dynamic menus and hover-triggered elements.)<\/em><\/li>\n<li data-start=\"535\" data-end=\"711\">How do you perform drag and drop in Selenium using the Actions class?<br data-start=\"604\" data-end=\"607\" \/><em data-start=\"607\" data-end=\"709\">(Evaluates hands-on understanding of sequence-based interactions \u2014 a common CTS practical question.)<\/em><\/li>\n<li data-start=\"713\" data-end=\"941\">What is the difference between <code data-start=\"744\" data-end=\"753\">click()<\/code>, <code data-start=\"755\" data-end=\"770\">doubleClick()<\/code>, and <code data-start=\"776\" data-end=\"801\">moveToElement().click()<\/code> in Selenium?<br data-start=\"814\" data-end=\"817\" \/><em data-start=\"817\" data-end=\"941\" data-is-last-node=\"\">(Checks deep understanding of event handling and DOM interaction during automation \u2014 a typical Cognizant interview query.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_21_What_is_an_assertion_and_its_types\"><\/span><strong>Question:<\/strong><strong>21. What is an assertion and its types?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Assertions validate actual results against expected outcomes during test execution.<\/p>\n<p>There are two types:<\/p>\n<ul>\n<li>Hard Assertions (stop execution on failure) and<\/li>\n<li>Soft Assertions (continue even after failure).<\/li>\n<\/ul>\n<p>They ensure test accuracy and reliability by verifying conditions. Assertions are widely used in testing frameworks like TestNG and JUnit.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Mention using SoftAssert for multiple validations.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"192\">What is the difference between hard and soft assertions in Selenium?<br data-start=\"95\" data-end=\"98\" \/><em data-start=\"98\" data-end=\"190\">(Common CTS follow-up to test understanding of execution flow control in TestNG or JUnit.)<\/em><\/li>\n<li data-start=\"194\" data-end=\"358\">How do you use SoftAssert in TestNG for multiple validations?<br data-start=\"255\" data-end=\"258\" \/><em data-start=\"258\" data-end=\"356\">(Frequently asked in Cognizant interviews to check practical implementation of soft assertions.)<\/em><\/li>\n<li data-start=\"360\" data-end=\"513\">What happens when a hard assertion fails during test execution?<br data-start=\"423\" data-end=\"426\" \/><em data-start=\"426\" data-end=\"511\">(Evaluates candidate\u2019s knowledge of exception handling and test flow interruption.)<\/em><\/li>\n<li data-start=\"515\" data-end=\"673\">Can you combine hard and soft assertions in the same test case?<br data-start=\"578\" data-end=\"581\" \/><em data-start=\"581\" data-end=\"671\">(Tests understanding of practical framework design and flexibility in automation tests.)<\/em><\/li>\n<li data-start=\"675\" data-end=\"849\">How do assertions differ from verification commands in Selenium?<br data-start=\"739\" data-end=\"742\" \/><em data-start=\"742\" data-end=\"849\" data-is-last-node=\"\">(A popular CTS question to assess the difference between validation logic and error-handling approaches.)<\/em><\/li>\n<\/ol>\n<p><a href=\"https:\/\/www.testleaf.com\/course\/playwright.html?utm_source=blog-post&amp;utm_medium=Organic&amp;utm_campaign=Blog_Post\"><img decoding=\"async\" class=\"aligncenter wp-image-5709 size-full\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class.png\" alt=\"Playwright automation testing\" width=\"2048\" height=\"512\" srcset=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class.png 2048w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class-300x75.png 300w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class-1024x256.png 1024w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class-768x192.png 768w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class-1536x384.png 1536w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class-150x38.png 150w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Question_22_Name_any_six_exceptions_you_handle\"><\/span><strong>Question:<\/strong><strong>22. Name any six exceptions you handle?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Common Selenium exceptions include:<\/p>\n<ul>\n<li>NoSuchElementException,<\/li>\n<li>TimeoutException,<\/li>\n<li>ElementNotVisibleException,<\/li>\n<li>StaleElementReferenceException,<\/li>\n<li>NoSuchFrameException,<\/li>\n<li>NullPointerException.<\/li>\n<\/ul>\n<p>Handling them ensures smooth and error-free automation execution.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Know how to handle StaleElementReferenceException \u2014 a common CTS question.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"196\">What is the difference between checked and unchecked exceptions in Selenium?<br data-start=\"103\" data-end=\"106\" \/><em data-start=\"106\" data-end=\"194\">(Common CTS follow-up to assess understanding of runtime vs. compile-time exceptions.)<\/em><\/li>\n<li data-start=\"198\" data-end=\"372\">How do you handle <code data-start=\"216\" data-end=\"248\">StaleElementReferenceException<\/code> in Selenium?<br data-start=\"261\" data-end=\"264\" \/><em data-start=\"264\" data-end=\"370\">(A frequently asked Cognizant question to test practical debugging and synchronization handling skills.)<\/em><\/li>\n<li data-start=\"374\" data-end=\"541\">What causes a <code data-start=\"388\" data-end=\"412\">NoSuchElementException<\/code> and how can you prevent it?<br data-start=\"440\" data-end=\"443\" \/><em data-start=\"443\" data-end=\"539\">(Tests knowledge of locator strategies and wait mechanisms \u2014 a popular CTS scenario question.)<\/em><\/li>\n<li data-start=\"543\" data-end=\"696\">What is the difference between <code data-start=\"574\" data-end=\"581\">throw<\/code> and <code data-start=\"586\" data-end=\"594\">throws<\/code> in Java exception handling?<br data-start=\"622\" data-end=\"625\" \/><em data-start=\"625\" data-end=\"694\">(Evaluates understanding of exception declaration and propagation.)<\/em><\/li>\n<li data-start=\"698\" data-end=\"865\">How do you implement a global exception handler in a Selenium framework?<br data-start=\"770\" data-end=\"773\" \/><em data-start=\"773\" data-end=\"865\" data-is-last-node=\"\">(Advanced CTS-level question to check framework-level exception management and reporting.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_23_How_to_retrieve_message_from_an_alert_box\"><\/span><strong>Question:<\/strong><strong>23. How to retrieve message from an alert box?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Alerts are small popup windows that display messages or confirmations. You can switch to the alert, read its message, and either accept or dismiss it. Handling alerts is essential for validating UI prompts and warnings. It ensures the script continues seamlessly without interruptions.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Include examples with accept\/dismiss methods.<\/p>\n<p><strong>Related Posts:<\/strong> <a href=\"https:\/\/www.testleaf.com\/blog\/epam-interview-questions-with-answers\/\">Epam Interview Questions<\/a><\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"173\">What are the different types of alerts in Selenium?<br data-start=\"78\" data-end=\"81\" \/><em data-start=\"81\" data-end=\"171\">(Common CTS follow-up to test understanding of simple, confirmation, and prompt alerts.)<\/em><\/li>\n<li data-start=\"175\" data-end=\"340\">How do you accept or dismiss an alert in Selenium?<br data-start=\"225\" data-end=\"228\" \/><em data-start=\"228\" data-end=\"338\">(Frequently asked in Cognizant interviews to check practical command usage like <code data-start=\"309\" data-end=\"319\">accept()<\/code> and <code data-start=\"324\" data-end=\"335\">dismiss()<\/code>.)<\/em><\/li>\n<li data-start=\"342\" data-end=\"477\">How can you send text to a prompt alert in Selenium?<br data-start=\"394\" data-end=\"397\" \/><em data-start=\"397\" data-end=\"475\">(Tests candidate\u2019s ability to handle input-based alerts using <code data-start=\"460\" data-end=\"472\">sendKeys()<\/code>.)<\/em><\/li>\n<li data-start=\"479\" data-end=\"651\">What happens if you try to interact with an alert without switching to it first?<br data-start=\"559\" data-end=\"562\" \/><em data-start=\"562\" data-end=\"649\">(Evaluates knowledge of <code data-start=\"587\" data-end=\"612\">NoAlertPresentException<\/code> and alert handling best practices.)<\/em><\/li>\n<li data-start=\"653\" data-end=\"820\">How do you verify the text displayed in an alert box during automation?<br data-start=\"724\" data-end=\"727\" \/><em data-start=\"727\" data-end=\"820\" data-is-last-node=\"\">(A typical CTS scenario question focusing on validation of alert messages in test scripts.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_24_What_are_listeners_in_TestNG\"><\/span><strong>Question:<\/strong><strong>24. What are listeners in <a href=\"https:\/\/www.testleaf.com\/blog\/automating-testng-report-emails-a-step-by-step-guide\/\">TestNG<\/a>?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p>Listeners are special interfaces that monitor test execution and react to specific events. They can capture events like test start, success, failure, or skip.<\/p>\n<p>Common ones include <em><strong>ITestListener<\/strong> <\/em>and <em><strong>ISuiteListener<\/strong><\/em>.<\/p>\n<p>They\u2019re mainly used for logging, reporting, and custom test behavior.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip<\/strong>: Highlight how you used listeners for screenshots or logs.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"154\">What is the purpose of listeners in TestNG?<br data-start=\"70\" data-end=\"73\" \/><em data-start=\"73\" data-end=\"152\">(Common CTS follow-up to test understanding of event-driven test monitoring.)<\/em><\/li>\n<li data-start=\"156\" data-end=\"347\">What is the difference between <code data-start=\"187\" data-end=\"202\">ITestListener<\/code> and <code data-start=\"207\" data-end=\"223\">ISuiteListener<\/code> in TestNG?<br data-start=\"234\" data-end=\"237\" \/><em data-start=\"237\" data-end=\"345\">(Frequently asked in Cognizant interviews to assess clarity on scope \u2014 test-level vs. suite-level events.)<\/em><\/li>\n<li data-start=\"349\" data-end=\"518\">How can you implement a listener in a Selenium TestNG framework?<br data-start=\"413\" data-end=\"416\" \/><em data-start=\"416\" data-end=\"516\">(Tests hands-on knowledge of integrating listeners using <code data-start=\"474\" data-end=\"486\">@Listeners<\/code> annotation or <code data-start=\"501\" data-end=\"513\">testng.xml<\/code>.)<\/em><\/li>\n<li data-start=\"520\" data-end=\"674\">How can listeners be used to capture screenshots on test failure?<br data-start=\"585\" data-end=\"588\" \/><em data-start=\"588\" data-end=\"672\">(A practical CTS scenario question focusing on real-world framework enhancements.)<\/em><\/li>\n<li data-start=\"676\" data-end=\"866\">Can multiple listeners be used in a single TestNG project? How are they executed?<br data-start=\"757\" data-end=\"760\" \/><em data-start=\"760\" data-end=\"866\" data-is-last-node=\"\">(Evaluates understanding of listener chaining and execution order \u2014 often asked in advanced CTS rounds.)<\/em><\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Question_25_Difference_between_setSpeed_and_sleep_methods\"><\/span><strong>Question:25. Difference between setSpeed() and sleep() methods.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4>Answer :<\/h4>\n<p><em><strong>setSpeed()<\/strong><\/em> was used in older Selenium versions (RC) to slow execution; it is now deprecated.<\/p>\n<p><em><strong>sleep()<\/strong><\/em> is a Java method that pauses execution for a defined duration.<\/p>\n<p>While <em><strong>setSpeed()<\/strong><\/em> affects all commands,<em><strong> sleep()<\/strong><\/em> pauses the entire thread.<\/p>\n<p>Using <em><strong>sleep()<\/strong><\/em> is common for fixed wait times during automation.<\/p>\n<p>\ud83d\udca1 <strong>Expert Tip:<\/strong> Explain why <em><strong>Thread.sleep()<\/strong><\/em> isn\u2019t ideal for dynamic web apps.<\/p>\n<h3 data-start=\"0\" data-end=\"25\"><strong data-start=\"4\" data-end=\"25\">Related Questions<\/strong><\/h3>\n<ol>\n<li data-start=\"27\" data-end=\"198\">Why is <code data-start=\"34\" data-end=\"50\">Thread.sleep()<\/code> not recommended for synchronization in Selenium?<br data-start=\"99\" data-end=\"102\" \/><em data-start=\"102\" data-end=\"196\">(Common CTS follow-up to test understanding of dynamic waits and efficient synchronization.)<\/em><\/li>\n<li data-start=\"200\" data-end=\"394\">What are the alternatives to <code data-start=\"229\" data-end=\"245\">Thread.sleep()<\/code> in Selenium WebDriver?<br data-start=\"268\" data-end=\"271\" \/><em data-start=\"271\" data-end=\"392\">(Frequently asked in Cognizant interviews to assess knowledge of <code data-start=\"337\" data-end=\"352\">WebDriverWait<\/code>, <code data-start=\"354\" data-end=\"366\">FluentWait<\/code>, and conditional waits.)<\/em><\/li>\n<li data-start=\"396\" data-end=\"574\">What was the role of <code data-start=\"417\" data-end=\"429\">setSpeed()<\/code> in Selenium RC, and why was it deprecated?<br data-start=\"472\" data-end=\"475\" \/><em data-start=\"475\" data-end=\"572\">(Checks historical understanding of Selenium evolution \u2014 often used to gauge experience depth.)<\/em><\/li>\n<li data-start=\"576\" data-end=\"732\">What is the difference between <code data-start=\"607\" data-end=\"623\">Thread.sleep()<\/code> and implicit\/explicit waits?<br data-start=\"652\" data-end=\"655\" \/><em data-start=\"655\" data-end=\"730\">(Evaluates clarity on static vs. dynamic waiting mechanisms in Selenium.)<\/em><\/li>\n<li data-start=\"734\" data-end=\"904\">How can improper use of <code data-start=\"758\" data-end=\"774\">Thread.sleep()<\/code> affect test performance and reliability?<br data-start=\"815\" data-end=\"818\" \/><em data-start=\"818\" data-end=\"904\" data-is-last-node=\"\">(A real-time CTS scenario question focusing on best practices in test optimization.)<\/em><\/li>\n<\/ol>\n<h3><strong>Conclusion: Prepare Smart, Not Hard<\/strong><\/h3>\n<p data-start=\"7582\" data-end=\"7759\">Cracking a <strong data-start=\"7593\" data-end=\"7630\">CTS (Cognizant) interview in 2026<\/strong> requires more than memorizing theory \u2014 it\u2019s about understanding real-world scenarios and thinking like an automation engineer.<\/p>\n<p data-start=\"7761\" data-end=\"7921\">At <a href=\"https:\/\/www.testleaf.com\/?utm_source=blog-post&amp;utm_medium=Organic&amp;utm_campaign=Blog_Post\"><strong data-start=\"7764\" data-end=\"7776\">Testleaf<\/strong><\/a>, we\u2019ve helped thousands of QA professionals master <strong data-start=\"7828\" data-end=\"7881\">Java, Selenium, Playwright, and <a href=\"https:\/\/www.testleaf.com\/blog\/traditional-automation-testing-vs-ai-driven-testing\/\">AI-driven testing<\/a><\/strong> through practical, hands-on learning.<\/p>\n<p>\ud83d\udcd8 <strong data-start=\"199\" data-end=\"238\">Ready to accelerate your QA career?<\/strong><br data-start=\"238\" data-end=\"241\" \/>Join <strong data-start=\"246\" data-end=\"287\">Testleaf\u2019s <a href=\"https:\/\/www.testleaf.com\/course\/selenium-automation-certification-training-course.html?utm_source=blog-post&amp;utm_medium=Organic&amp;utm_campaign=Blog_Post\">Selenium Automation Course<\/a><\/strong> and gain hands-on experience with real CTS-style interview scenarios, expert guidance, and project-based learning from industry mentors.<\/p>\n<h3 data-start=\"225\" data-end=\"302\"><strong data-start=\"229\" data-end=\"300\">Top Cognizant Automation Framework Questions (2\u20135 Years Experience):<\/strong><\/h3>\n<p>&nbsp;<\/p>\n<ol>\n<li data-start=\"397\" data-end=\"558\">\n<p data-start=\"400\" data-end=\"558\"><strong data-start=\"400\" data-end=\"496\">How do you handle dynamic XPath or elements that change frequently in your automation suite?<\/strong><br data-start=\"496\" data-end=\"499\" \/><em data-start=\"499\" data-end=\"558\">(Tests problem-solving in real-time locator maintenance.)<\/em><\/p>\n<\/li>\n<li data-start=\"560\" data-end=\"710\">\n<p data-start=\"563\" data-end=\"710\"><strong data-start=\"563\" data-end=\"638\">What design patterns have you implemented in your automation framework?<\/strong><br data-start=\"638\" data-end=\"641\" \/><em data-start=\"641\" data-end=\"710\">(Common answers: Singleton, Factory, Strategy, or Builder pattern.)<\/em><\/p>\n<\/li>\n<li data-start=\"712\" data-end=\"818\">\n<p data-start=\"715\" data-end=\"818\"><strong data-start=\"715\" data-end=\"773\">How do you parameterize test cases in TestNG or JUnit?<\/strong><br data-start=\"773\" data-end=\"776\" \/><em data-start=\"776\" data-end=\"818\">(Checks data-driven approach knowledge.)<\/em><\/p>\n<\/li>\n<li data-start=\"820\" data-end=\"959\">\n<p data-start=\"823\" data-end=\"959\"><strong data-start=\"823\" data-end=\"901\">Explain how your framework handles browser setup and teardown efficiently.<\/strong><br data-start=\"901\" data-end=\"904\" \/><em data-start=\"904\" data-end=\"959\">(Looks for reusable BaseTest or DriverFactory logic.)<\/em><\/p>\n<\/li>\n<li data-start=\"961\" data-end=\"1140\">\n<p data-start=\"964\" data-end=\"1140\"><strong data-start=\"964\" data-end=\"1051\">How do you maintain different test environments (QA, Stage, UAT) in your framework?<\/strong><br data-start=\"1051\" data-end=\"1054\" \/><em data-start=\"1054\" data-end=\"1140\">(Evaluates configuration-driven design using <code data-start=\"1100\" data-end=\"1113\">.properties<\/code> or environment profiles.)<\/em><\/p>\n<\/li>\n<li data-start=\"1142\" data-end=\"1289\">\n<p data-start=\"1145\" data-end=\"1289\"><strong data-start=\"1145\" data-end=\"1223\">What\u2019s your approach to handle pop-ups, alerts, and iframes in automation?<\/strong><br data-start=\"1223\" data-end=\"1226\" \/><em data-start=\"1226\" data-end=\"1289\">(Tests command-level handling and reusable utility creation.)<\/em><\/p>\n<\/li>\n<li data-start=\"1291\" data-end=\"1417\">\n<p data-start=\"1294\" data-end=\"1417\"><strong data-start=\"1294\" data-end=\"1348\">How do you manage dependencies between test cases?<\/strong><br data-start=\"1348\" data-end=\"1351\" \/><em data-start=\"1351\" data-end=\"1417\">(Checks test independence, TestNG annotations, and retry logic.)<\/em><\/p>\n<\/li>\n<li data-start=\"1419\" data-end=\"1574\">\n<p data-start=\"1422\" data-end=\"1574\"><strong data-start=\"1422\" data-end=\"1490\">What is the purpose of using WebDriverManager in your framework?<\/strong><br data-start=\"1490\" data-end=\"1493\" \/><em data-start=\"1493\" data-end=\"1574\">(Cognizant often asks this to check awareness of dependency-free driver setup.)<\/em><\/p>\n<\/li>\n<li data-start=\"1576\" data-end=\"1713\">\n<p data-start=\"1579\" data-end=\"1713\"><strong data-start=\"1579\" data-end=\"1656\">How do you capture and attach screenshots for failed tests automatically?<\/strong><br data-start=\"1656\" data-end=\"1659\" \/><em data-start=\"1659\" data-end=\"1713\">(Tests integration with listeners or ExtentReports.)<\/em><\/p>\n<\/li>\n<li data-start=\"1715\" data-end=\"1857\">\n<p data-start=\"1719\" data-end=\"1857\"><strong data-start=\"1719\" data-end=\"1790\">What strategy do you use for test case prioritization and grouping?<\/strong><br data-start=\"1790\" data-end=\"1793\" \/><em data-start=\"1793\" data-end=\"1857\">(Checks practical TestNG group usage and regression strategy.)<\/em><\/p>\n<\/li>\n<li data-start=\"1859\" data-end=\"2004\">\n<p data-start=\"1863\" data-end=\"2004\"><strong data-start=\"1863\" data-end=\"1935\">How do you store and manage reusable locators across your framework?<\/strong><br data-start=\"1935\" data-end=\"1938\" \/><em data-start=\"1938\" data-end=\"2004\">(Tests Page Object consistency and locator repository approach.)<\/em><\/p>\n<\/li>\n<li data-start=\"2006\" data-end=\"2158\">\n<p data-start=\"2010\" data-end=\"2158\"><strong data-start=\"2010\" data-end=\"2085\">How do you manage waits globally instead of using them in every script?<\/strong><br data-start=\"2085\" data-end=\"2088\" \/><em data-start=\"2088\" data-end=\"2158\">(Cognizant checks for utility-based or wrapper-based wait handling.)<\/em><\/p>\n<\/li>\n<li data-start=\"2160\" data-end=\"2309\">\n<p data-start=\"2164\" data-end=\"2309\"><strong data-start=\"2164\" data-end=\"2250\">What is your approach to handle test data versioning when data changes frequently?<\/strong><br data-start=\"2250\" data-end=\"2253\" \/><em data-start=\"2253\" data-end=\"2309\">(Looks for externalized data or database integration.)<\/em><\/p>\n<\/li>\n<li data-start=\"2311\" data-end=\"2464\">\n<p data-start=\"2315\" data-end=\"2464\"><strong data-start=\"2315\" data-end=\"2396\">How do you generate and send test reports automatically via Jenkins or email?<\/strong><br data-start=\"2396\" data-end=\"2399\" \/><em data-start=\"2399\" data-end=\"2464\">(Tests integration with post-build actions or email utilities.)<\/em><\/p>\n<\/li>\n<li data-start=\"2466\" data-end=\"2635\">\n<p data-start=\"2470\" data-end=\"2635\"><strong data-start=\"2470\" data-end=\"2555\">How do you ensure your automation scripts are maintainable when UI changes occur?<\/strong><br data-start=\"2555\" data-end=\"2558\" \/><em data-start=\"2558\" data-end=\"2635\">(Evaluates dynamic locators, abstraction, and element property management.)<\/em><\/p>\n<\/li>\n<li data-start=\"2637\" data-end=\"2794\">\n<p data-start=\"2641\" data-end=\"2794\"><strong data-start=\"2641\" data-end=\"2726\">What kind of retry logic or re-run mechanism have you used for failed test cases?<\/strong><br data-start=\"2726\" data-end=\"2729\" \/><em data-start=\"2729\" data-end=\"2794\">(Cognizant expects use of IRetryAnalyzer or similar mechanism.)<\/em><\/p>\n<\/li>\n<li data-start=\"2796\" data-end=\"2933\">\n<p data-start=\"2800\" data-end=\"2933\"><strong data-start=\"2800\" data-end=\"2883\">How do you maintain reusability of common actions like click, type, and select?<\/strong><br data-start=\"2883\" data-end=\"2886\" \/><em data-start=\"2886\" data-end=\"2933\">(Tests presence of wrapper or utility layer.)<\/em><\/p>\n<\/li>\n<li data-start=\"2935\" data-end=\"3080\">\n<p data-start=\"2939\" data-end=\"3080\"><strong data-start=\"2939\" data-end=\"3014\">How do you manage test suite execution on multiple browsers in Jenkins?<\/strong><br data-start=\"3014\" data-end=\"3017\" \/><em data-start=\"3017\" data-end=\"3080\">(Evaluates capability for parallel and parameterized builds.)<\/em><\/p>\n<\/li>\n<li data-start=\"3082\" data-end=\"3237\">\n<p data-start=\"3086\" data-end=\"3237\"><strong data-start=\"3086\" data-end=\"3161\">Explain how you validate data between UI and database using automation.<\/strong><br data-start=\"3161\" data-end=\"3164\" \/><em data-start=\"3164\" data-end=\"3237\">(Cognizant often asks this for full validation workflow understanding.)<\/em><\/p>\n<\/li>\n<li data-start=\"3239\" data-end=\"3393\">\n<p data-start=\"3243\" data-end=\"3393\"><strong data-start=\"3243\" data-end=\"3341\">How do you ensure your automation framework supports cross-platform execution (Windows\/Linux)?<\/strong><br data-start=\"3341\" data-end=\"3344\" \/><em data-start=\"3344\" data-end=\"3393\">(Tests OS-independent design and config setup.)<\/em><\/p>\n<\/li>\n<li data-start=\"3395\" data-end=\"3558\">\n<p data-start=\"3399\" data-end=\"3558\"><strong data-start=\"3399\" data-end=\"3479\">How do you measure and improve test execution time in your automation suite?<\/strong><br data-start=\"3479\" data-end=\"3482\" \/><em data-start=\"3482\" data-end=\"3558\">(Evaluates efficiency optimization \u2014 parallel runs, selective regression.)<\/em><\/p>\n<\/li>\n<li data-start=\"3560\" data-end=\"3708\">\n<p data-start=\"3564\" data-end=\"3708\"><strong data-start=\"3564\" data-end=\"3635\">How is exception handling implemented across your framework layers?<\/strong><br data-start=\"3635\" data-end=\"3638\" \/><em data-start=\"3638\" data-end=\"3708\">(Checks for central exception management and custom error messages.)<\/em><\/p>\n<\/li>\n<li data-start=\"3710\" data-end=\"3860\">\n<p data-start=\"3714\" data-end=\"3860\"><strong data-start=\"3714\" data-end=\"3795\">How do you perform data-driven testing using Excel or JSON in your framework?<\/strong><br data-start=\"3795\" data-end=\"3798\" \/><em data-start=\"3798\" data-end=\"3860\">(Assesses external data handling via Apache POI or Jackson.)<\/em><\/p>\n<\/li>\n<li data-start=\"3862\" data-end=\"3996\">\n<p data-start=\"3866\" data-end=\"3996\"><strong data-start=\"3866\" data-end=\"3935\">How do you integrate API and UI automation in a single framework?<\/strong><br data-start=\"3935\" data-end=\"3938\" \/><em data-start=\"3938\" data-end=\"3996\">(Cognizant is now emphasizing hybrid automation skills.)<\/em><\/p>\n<\/li>\n<li data-start=\"3998\" data-end=\"4159\">\n<p data-start=\"4002\" data-end=\"4159\"><strong data-start=\"4002\" data-end=\"4094\">How do you handle reporting of skipped or dependent test cases in your automation suite?<\/strong><br data-start=\"4094\" data-end=\"4097\" \/><em data-start=\"4097\" data-end=\"4159\">(Tests awareness of TestNG listeners and reporting filters.)<\/em><\/p>\n<\/li>\n<\/ol>\n<h2 data-start=\"293\" data-end=\"338\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_FAQs\"><\/span><strong data-start=\"299\" data-end=\"336\">Frequently Asked Questions (FAQs)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h5 data-start=\"340\" data-end=\"436\"><strong data-start=\"344\" data-end=\"434\">1. What skills are required to crack the CTS (Cognizant) automation interview in 2026?<\/strong><\/h5>\n<p data-start=\"437\" data-end=\"699\">To ace a CTS automation interview, focus on <strong data-start=\"481\" data-end=\"502\">Java fundamentals<\/strong>, <strong data-start=\"504\" data-end=\"526\">Selenium WebDriver<\/strong>, <strong data-start=\"528\" data-end=\"538\">TestNG<\/strong>, and <strong data-start=\"544\" data-end=\"573\">framework design patterns<\/strong>. Understanding <strong data-start=\"589\" data-end=\"617\">CI\/CD tools like Jenkins<\/strong> and <strong data-start=\"622\" data-end=\"658\">version control systems like Git<\/strong> will also give you a competitive edge.<\/p>\n<h5 data-start=\"706\" data-end=\"781\"><strong data-start=\"710\" data-end=\"779\">2. Is Selenium enough to get a job in Cognizant as a <a href=\"https:\/\/www.testleaf.com\/blog\/a-qa-engineers-guide-to-collaborating-better-with-developers\/\">QA engineer<\/a>?<\/strong><\/h5>\n<p data-start=\"782\" data-end=\"1080\">Selenium is a great start, but CTS values professionals who understand the <strong data-start=\"857\" data-end=\"890\">complete automation lifecycle<\/strong> \u2014 from writing robust test scripts to integrating them with <strong data-start=\"951\" data-end=\"996\">Maven, Jenkins, and cloud execution tools<\/strong>. Pairing Selenium skills with <strong data-start=\"1027\" data-end=\"1057\">AI-based testing knowledge<\/strong> makes you stand out.<\/p>\n<h5 data-start=\"1087\" data-end=\"1178\"><strong data-start=\"1091\" data-end=\"1176\">3. How can a Selenium Automation Course help me prepare for Cognizant interviews?<\/strong><\/h5>\n<p data-start=\"1179\" data-end=\"1465\">A <strong data-start=\"1181\" data-end=\"1211\">Selenium Automation Course<\/strong> provides hands-on training in real-world projects and interview-style challenges. Testleaf\u2019s program includes <strong data-start=\"1322\" data-end=\"1353\">CTS-style automation rounds<\/strong>, helping you master <strong data-start=\"1374\" data-end=\"1431\">locators, waits, frameworks, and debugging techniques<\/strong> that recruiters expect in 2026.<\/p>\n<h5 data-start=\"1472\" data-end=\"1557\"><strong data-start=\"1476\" data-end=\"1555\">4. What is the expected interview pattern for CTS automation testing roles?<\/strong><\/h5>\n<p data-start=\"1558\" data-end=\"1793\">Typically, there are <strong data-start=\"1579\" data-end=\"1595\">three rounds<\/strong> \u2014 a <strong data-start=\"1600\" data-end=\"1625\">technical coding test<\/strong> (Java\/Selenium), a <strong data-start=\"1645\" data-end=\"1669\">technical discussion<\/strong> covering frameworks and problem-solving, and an <strong data-start=\"1718\" data-end=\"1744\">HR or managerial round<\/strong> to assess communication and scenario handling.<\/p>\n<h5 data-start=\"1800\" data-end=\"1894\"><strong data-start=\"1804\" data-end=\"1892\">5. Which automation testing tools are important besides Selenium for CTS interviews?<\/strong><\/h5>\n<p data-start=\"1895\" data-end=\"2134\">In addition to Selenium, learning <strong data-start=\"1929\" data-end=\"1943\">Playwright<\/strong>, <strong data-start=\"1945\" data-end=\"1956\">Cypress<\/strong>, and <strong data-start=\"1962\" data-end=\"1983\">API testing tools<\/strong> like <strong data-start=\"1989\" data-end=\"2000\">Postman<\/strong> or <strong data-start=\"2004\" data-end=\"2019\">RestAssured<\/strong> can boost your chances. These tools show your adaptability and readiness for <strong data-start=\"2097\" data-end=\"2131\">modern automation environments<\/strong>.<\/p>\n<h5 data-start=\"2141\" data-end=\"2218\"><strong data-start=\"2145\" data-end=\"2216\">6. How do I prepare for Selenium questions in Cognizant interviews?<\/strong><\/h5>\n<p data-start=\"2219\" data-end=\"2548\">Start by practicing <strong data-start=\"2239\" data-end=\"2267\">common Selenium commands<\/strong>, writing <strong data-start=\"2277\" data-end=\"2303\">dynamic XPath locators<\/strong>, and understanding <strong data-start=\"2323\" data-end=\"2355\">test synchronization (waits)<\/strong>. Revise framework concepts such as <strong data-start=\"2391\" data-end=\"2418\">Page Object Model (POM)<\/strong> and <strong data-start=\"2423\" data-end=\"2446\">Data-Driven Testing<\/strong>. Enrolling in a <strong data-start=\"2463\" data-end=\"2493\">Selenium Automation Course<\/strong> helps solidify these skills through guided practice.<\/p>\n<h5 data-start=\"2555\" data-end=\"2633\"><strong data-start=\"2559\" data-end=\"2631\">7. Does Cognizant focus on coding questions for QA automation roles?<\/strong><\/h5>\n<p data-start=\"2634\" data-end=\"2868\">Yes. Most CTS interviews for automation engineers include <strong data-start=\"2692\" data-end=\"2716\">Java coding problems<\/strong>, often related to arrays, strings, collections, or loops. You may also need to <strong data-start=\"2796\" data-end=\"2841\">write test scripts or debug existing code<\/strong> during technical rounds.<\/p>\n<h5 data-start=\"2875\" data-end=\"2966\"><strong data-start=\"2879\" data-end=\"2964\">8. What salary range can Selenium automation testers expect at Cognizant in 2026?<\/strong><\/h5>\n<p data-start=\"2967\" data-end=\"3171\">For professionals with <a href=\"https:\/\/www.testleaf.com\/blog\/2025-top-automation-testing-infosys-interview-questions-with-expert-answers-from-testleaf-for-2-to-5-years-experience\/\"><strong data-start=\"2990\" data-end=\"3017\">2\u20135 years of experience<\/strong><\/a>, salaries range from <strong data-start=\"3039\" data-end=\"3062\">\u20b95.5 LPA to \u20b912 LPA<\/strong>, depending on technical depth, framework design expertise, and exposure to <strong data-start=\"3138\" data-end=\"3168\">DevOps or AI testing tools<\/strong>.<\/p>\n<h5 data-start=\"3178\" data-end=\"3253\"><strong data-start=\"3182\" data-end=\"3251\">9. How can I move from manual testing to automation in Cognizant?<\/strong><\/h5>\n<p data-start=\"3254\" data-end=\"3510\">Start by learning <strong data-start=\"3272\" data-end=\"3285\">core Java<\/strong> and then progress to <strong data-start=\"3307\" data-end=\"3329\">Selenium WebDriver<\/strong>, <strong data-start=\"3331\" data-end=\"3341\">TestNG<\/strong>, and <strong data-start=\"3347\" data-end=\"3356\">Maven<\/strong>. Hands-on experience through a <strong data-start=\"3388\" data-end=\"3418\">Selenium Automation Course<\/strong> helps bridge the gap by giving you real project experience to showcase during interviews.<\/p>\n<h5 data-start=\"3517\" data-end=\"3600\"><strong data-start=\"3521\" data-end=\"3598\">10. Where can I get CTS-specific interview practice and expert mentoring?<\/strong><\/h5>\n<p data-start=\"3601\" data-end=\"3831\">You can join <strong data-start=\"3614\" data-end=\"3655\">Testleaf\u2019s Selenium Automation Course<\/strong>, where industry mentors conduct <strong data-start=\"3688\" data-end=\"3728\">real Cognizant-style mock interviews<\/strong>, offer <strong data-start=\"3736\" data-end=\"3762\">feedback on frameworks<\/strong>, and help you <strong data-start=\"3777\" data-end=\"3828\">build confidence for actual interview scenarios<\/strong>.<\/p>\n<h5><strong>We Also Provide Training In:<\/strong><\/h5>\n<ul>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/selenium-automation-certification-training-course.html\"><strong>Advanced Selenium Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/playwright.html\"><strong>Playwright Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/genai-qa-engineers-training-course.html\"><strong>Gen AI Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/aws-cloud-architect-certification-training-course.html\"><strong>AWS Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/rest-api-testing-certification-training-course.html\"><strong>REST API Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/full-stack-developer-certification-training-course.html\"><strong>Full Stack Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/appium-mobile-automation-certification-training-course.html\"><strong>Appium Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/dev-ops-master-certification-training-course.html\"><strong>DevOps Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/apache-jmeter-testing-training-course.html\"><strong>JMeter Performance Training<\/strong><\/a><\/li>\n<\/ul>\n<h6><strong>Author\u2019s Bio<\/strong>:<\/h6>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-5813 alignleft\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Dilip.png\" sizes=\"(max-width: 250px) 100vw, 250px\" srcset=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Dilip.png 250w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Dilip-150x150.png 150w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Dilip-96x96.png 96w\" alt=\"Dilip\" width=\"250\" height=\"250\" \/><\/p>\n<p>As a Senior SDET with 8+ years in testing and development, I build scalable automation platforms ensuring quality at speed. Passionate about mentoring and innovation, I equip teams with real-time solutions and high-impact frameworks, driving excellence through continuous learning. Let\u2019s shape the future of quality engineering together.<\/p>\n<p><strong>Dilipkumar Rajendran<\/strong><br \/>\nSenior SDET | Playwright &amp; Selenium Expert<\/p>\n<p><a href=\"https:\/\/www.linkedin.com\/in\/dilip-kumar-v-r-633308150\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/linkedin.png\" alt=\"LinkedIn Logo\" width=\"28\" height=\"28\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; If you\u2019re preparing for a Cognizant (CTS) interview in 2026, this guide is for you! Whether you\u2019re a manual tester transitioning to automation or an experienced QA engineer, knowing how to handle Java and Selenium-based interview questions can make all the difference. CTS interviews are known for testing your core programming logic, automation approach, &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.testleaf.com\/blog\/top-25-cts-cognizant-java-selenium-interview-questions-and-answers-2026-for-2-to-5-years-experience\/\"> <span class=\"screen-reader-text\">Top 25 CTS (Cognizant) Java &#038; Selenium Interview Questions and Answers 2026 \u2013 For 2 to 5 Years Experience<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":7389,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[62,16],"tags":[473,65,725,801,786,70,29],"class_list":["post-7388","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-interview-questions","category-selenium","tag-interview","tag-interview-questions","tag-interview-questions-and-answers","tag-java-for-automation-testing","tag-java-selenium","tag-learn-selenium","tag-selenium"],"acf":[],"aioseo_notices":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/posts\/7388","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/comments?post=7388"}],"version-history":[{"count":4,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/posts\/7388\/revisions"}],"predecessor-version":[{"id":7392,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/posts\/7388\/revisions\/7392"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/media\/7389"}],"wp:attachment":[{"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/media?parent=7388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/categories?post=7388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/tags?post=7388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}