Interview Questions Sitecore and C#

1. ASP.NET: HttpContext vs HttpContextBase
2. covariance and contravariance c#
3. Different session state in Sitecore
4. "Why can't I inherit static classes?
5. Glass Mapper - recursive mapping
1. glass mapper ieper
6. what .net framework you have worked on
7. Sitecore 9
8. What's new in the .net world
9. Web API routes registration via pipeline
10. difference between IEnumerable and enum
11. difference between async and await
12. SOLID PRinciples
13. OOPs Concepts
14. Basic C# like structure
15. classes
16. interface
17. method overload
18. boxing/unboxing
19. casting
20. generics
21. conversion
22. Design Patterns: Helix,
1. Design Patterns: Creational Patterns,
2. Design Patterns: Dependency injection,
3. delegates
4. Design Patterns: providers patterns,
5. Design Patterns: Test driven development practices
23. In, ref, out parameter
24. Pattern Matching
25. Generics
26. Anonymous Function
27. Make a class immutable
28. Dynamic keywords & New
29. Var and dynamic
30. Difference between convert.ToString() or .ToString()?
31. Difference Between Class and struct?
32. What is iterator?
33. Difference b/w ref and out
34. Difference between class and interface?
35. Difference between Array and ArrayList?
36. Difference between class and struct
37. Difference between String and Sting builder
38. Difference between Sitecore 8 and 9
39. Difference between Is vs As operator keyword in C#
40. Difference between == and Equals() ?
41. Difference between server.transfer and response.redirect?
42. What are the benifits of DI ?