Here’s a comprehensive list of questions that can help you strengthen your fundamentals across Core #Java, #Selenium, #APITesting, #TestNG, #BDD, #SQL.
Core Java (For Automation)
1. Difference between Abstract Class and Interface
2. Explain OOPs concepts with real-world examples
3. How does HashMap work internally?
4. Difference between final, finally, and finalize
How does Garbage Collection work in Java?
5. Overloading vs Overriding in Automation Frameworks
6. Difference between String, StringBuffer, and StringBuilder
7. Exception Handling Best Practices in Java
8. Why is Immutability important in Java?
9. How do you handle Synchronization in Multithreading?
Selenium & Automation
1. Difference between findElement() and findElements()
2. Types of Waits in Selenium
3. Explain Page Object Model (POM)
4. Handling Dynamic Web Elements
5. Screenshot Capture on Failure
5. Difference between quit() and close()
6. Handling Multiple Windows/Tabs
7. Executing Failed Test Cases in TestNG
8. Selenium Grid & Parallel Execution
9. Different Types of Locators in Selenium
API Testing (Rest Assured / Postman)
1. Difference between PUT and PATCH
2. JSON Schema Validation in Rest Assured
3. Authentication Types (Basic, OAuth, Bearer Token)
4. Data-Driven API Testing in Postman
5. Difference between SOAP and REST APIs
6. Response Time Validation in API Automation
7. Handling API Response Codes in Automation Frameworks
TestNG / BDD Cucumber
1. Difference between @BeforeTest and @BeforeMethod
2. Generating Extent / Allure Reports
3. Purpose of Hooks in Cucumber
4. Integrating Cucumber with TestNG
5. DataProvider vs Scenario Outline
SQL (Interview Focus)
1. Query to Find the 2nd Highest Salary
2. Joins and Their Types
3. ACID Properties in Databases
4. Detect Cycle in a Linked List
5. Find the Longest Palindrome Substring
