Web Testing & Debugging

Q1. What is unit testing?

1. A.Testing individual functions of code in isolation✓ Correct
2. B.Testing the entire application end to end
3. C.Testing only the database layer and queries
4. D.Testing CSS styles across different browsers

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Q2. What is a bug in software?

1. A.A planned feature in the software design
2. B.A CSS property that is incorrectly applied
3. C.An error in code causing unexpected behavior✓ Correct
4. D.A computer virus that damages system files

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Q3. What is the browser developer console used for?

1. A.Writing CSS styles for page elements
2. B.Managing database records and schemas
3. C.Debugging JavaScript and inspecting elements✓ Correct
4. D.Designing web page visual layouts

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Q4. What is console.log() used for in debugging?

1. A.Creating a user activity log in the database
2. B.Outputting values to the console for inspection✓ Correct
3. C.Sending logs to the remote server for storage
4. D.Creating log files on the server disk

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Q5. What is a test case?

1. A.Conditions to verify a feature works correctly✓ Correct
2. B.A computer case for housing hardware
3. C.A CSS container for grouping styled elements
4. D.A JavaScript class for creating object types

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Q6. What is manual testing?

1. A.Testing with reference to user documentation
2. B.Testing only the documentation for accuracy
3. C.Testing performed using automated tools
4. D.Testing software by hand without automation✓ Correct

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Q7. What does a breakpoint do in debugging?

1. A.Pauses code execution at a specific line for inspection✓ Correct
2. B.Breaks the code permanently so it stops running
3. C.Breaks the CSS layout causing elements to misalign
4. D.Creates a responsive breakpoint for media queries

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Q8. What is the Network tab in browser DevTools for?

1. A.Managing network configuration settings in browser
2. B.Creating network topology diagrams for documentation
3. C.Connecting to WiFi network for internet access
4. D.Monitoring HTTP requests, responses, and their timing✓ Correct

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Q9. What is regression testing?

1. A.Re-testing features after changes to check nothing broke✓ Correct
2. B.Testing CSS regression across different browsers
3. C.Testing database regression after schema updates
4. D.Testing a feature for the very first time

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Q10. What is a linter?

1. A.A debugger for stepping through code execution
2. B.A CSS framework for responsive page layouts
3. C.A testing framework for automated unit testing
4. D.A tool analyzing code for errors and style violations✓ Correct

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Q11. What is integration testing?

1. A.Testing CSS integration across page components
2. B.Testing only the user interface visual appearance
3. C.Testing individual functions in complete isolation
4. D.Testing how multiple modules work together as a group✓ Correct

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Q12. What is end-to-end (E2E) testing?

1. A.Testing from start to finish of the codebase
2. B.Testing exclusively the backend server logic only
3. C.Testing the complete application from user perspective✓ Correct
4. D.Testing only a single API endpoint in isolation

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Q13. What is Jest?

1. A.A JavaScript testing framework for unit and integration tests✓ Correct
2. B.A web server for hosting test environments and staging
3. C.A database tool for testing query performance and accuracy
4. D.A CSS framework for responsive web design

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Q14. What is Cypress used for?

1. A.API testing only without any browser interaction
2. B.End-to-end testing of web apps in a real browser✓ Correct
3. C.CSS processing and compilation of style files
4. D.Database testing for query performance and accuracy

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Q15. What is mocking in testing?

1. A.Making fun of poorly written source code
2. B.Creating fake implementations to isolate tested code✓ Correct
3. C.A debugging method tracking variable value changes
4. D.A CSS technique simulating dynamic state changes

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Q16. What is code coverage?

1. A.Covering code with explanatory inline comments
2. B.A security feature for protecting sensitive source code files
3. C.A metric measuring what percentage of code tests execute✓ Correct
4. D.A CSS overlay property for stacking visual layer elements

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Q17. What is Test-Driven Development (TDD)?

1. A.Writing tests before code, then implementing to pass✓ Correct
2. B.Developing tests after all code is fully written
3. C.A debugging technique for tracing execution flow
4. D.A testing framework for running automated test suites

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Q18. What is a test suite?

1. A.A hotel suite used for testing software
2. B.A debugging tool for inspecting test output data
3. C.A collection of related test cases grouped together✓ Correct
4. D.A CSS test framework for visual regression testing

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Q19. What is snapshot testing?

1. A.Comparing current output against a stored reference✓ Correct
2. B.A database backup for point-in-time recovery
3. C.A version control feature for branching code
4. D.Taking screenshots of the application pages

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Q20. What is the purpose of assertion libraries?

1. A.To assert database values match expected outputs
2. B.To create assertions within HTML for validation
3. C.To provide methods verifying expected code results✓ Correct
4. D.To assert CSS values match the design mockups

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Q21. What is the testing pyramid?

1. A.A database structure for hierarchical data storage
2. B.A pyramid-shaped test data structure for storage
3. C.Many unit tests, fewer integration, fewest E2E tests✓ Correct
4. D.A CSS shape rendered using clip-path properties

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Q22. What is mutation testing?

1. A.Testing DNA sequences in bioinformatics research
2. B.Testing code changes before merging into main branch
3. C.Database mutation testing for verifying data integrity
4. D.Introducing small code changes to verify tests detect them✓ Correct

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Q23. What is the difference between stubs and mocks?

1. A.Mocks are simpler and less capable than stub versions
2. B.They are identical in their testing approach
3. C.Stubs give predetermined responses; mocks verify interactions✓ Correct
4. D.Stubs verify that specific method interactions occurred

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Q24. What is visual regression testing?

1. A.Testing CSS variables across different components
2. B.Testing image quality and resolution across screen sizes
3. C.Testing color contrast for accessibility compliance
4. D.Comparing screenshots across versions for visual changes✓ Correct

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Q25. What is contract testing in microservices?

1. A.Legal testing of software license agreements
2. B.CSS contract testing for cross-browser consistency
3. C.Testing employment contracts for HR compliance
4. D.Verifying services communicate per agreed interfaces✓ Correct

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Q26. What is fuzz testing?

1. A.Testing with blurry images for visual quality checks
2. B.Providing random invalid data to find vulnerabilities✓ Correct
3. C.Testing with fuzzy logic algorithms for AI systems
4. D.CSS filter testing for verifying blur effect output

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Q27. What is the purpose of Selenium?

1. A.A JavaScript runtime for executing server-side scripts
2. B.A framework for automating browser testing interactions✓ Correct
3. C.A CSS preprocessor for compiling advanced style syntax
4. D.A chemical element found in nature supplements

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Q28. What is Playwright?

1. A.A CSS animation tool for creating transition effects
2. B.A theater tool for managing stage performances
3. C.A modern testing framework with auto-wait and isolation✓ Correct
4. D.A database testing tool for verifying query accuracy

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Q29. What is chaos engineering?

1. A.A random testing approach without defined test cases
2. B.Random coding without any structure or planning
3. C.Deliberately introducing failures to test resilience✓ Correct
4. D.A messy code style ignoring best practices rules

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Q30. What is the difference between black-box and white-box testing?

1. A.Black-box tests without code knowledge; white-box tests with✓ Correct
2. B.They are identical in their testing methodology
3. C.Black-box testing requires full access to source code
4. D.White-box testing ignores internal implementation details

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