Freshers (0–2 years)

ASP.NET Web API Interview Questions for Freshers

Preparing for your first ASP.NET Web API interviews? This set is curated for freshers and early-career developers (0–2 years): the 27 questions that come up most for entry-level roles, each with a clear answer, example code and follow-ups.

27Questions14Beginner13Intermediate

27 ASP.NET Web API questions

  1. 1What is Swagger in ASP.NET Web API?Intermediate
  2. 2What is CORS in ASP.NET Web API?Intermediate
  3. 3What is Content Formatter in ASP.NET Web API?Intermediate
  4. 4What is Middleware in ASP.NET Web API?Intermediate
  5. 5What is dependency injection lifecycle in Web API?Intermediate
  6. 6What is API Versioning in ASP.NET Web API?Intermediate
  7. 7What is Model Validation in ASP.NET Web API?Intermediate
  8. 8What is Authorization Filter in ASP.NET Web API?Intermediate
  9. 9What is Exception Filter in ASP.NET Web API?Intermediate
  10. 10What are Action Filters in ASP.NET Web API?Intermediate
  11. 11What is ControllerBase vs Controller in Web API?Beginner
  12. 12What is dependency injection in Web API?Beginner
  13. 13What is content negotiation in Web API?Beginner
  14. 14What is model binding in Web API?Beginner
  15. 15What are status codes in Web API?Beginner
  16. 16What is IActionResult in Web API?Beginner
  17. 17What is ApiController attribute?Beginner
  18. 18What is routing in ASP.NET Web API?Beginner
  19. 19What are HTTP verbs and how are they used in Web API?Beginner
  20. 20What is ASP.NET Web API?Beginner
  21. 21ASP.NET Web API Interview Question 1 (Free)Beginner
  22. 22ASP.NET Web API Interview Question 2 (Free)Intermediate
  23. 23ASP.NET Web API Interview Question 5 (Free)Intermediate
  24. 24ASP.NET Web API Interview Question 4 (Free)Beginner
  25. 25ASP.NET Web API Advanced Interview Question 10Beginner
  26. 26ASP.NET Web API Advanced Interview Question 8Intermediate
  27. 27ASP.NET Web API Advanced Interview Question 7Beginner

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Frequently asked questions

Which ASP.NET Web API questions do freshers (0–2 years) get asked?

This page collects 27 ASP.NET Web API interview questions aligned with freshers (0–2 years), ranging across the difficulty levels that match that experience band.

How do I prepare for a ASP.NET Web API interview with my experience level?

Work through these questions in order, make sure you can explain each answer out loud, and pay attention to the real-world examples and follow-ups — interviewers at this level care as much about reasoning as the final answer.

Do the answers include code and examples?

Yes — answers include explanations, code examples where relevant, common mistakes to avoid and follow-up questions so you are ready for the full interview conversation.