Asp.Net MVC Interview Questions

Hey Friends,

Now a days we can see lot of companies asking about the ASP.net MVC related questions in their interviews. So i thought of to keep few questions which are related to the ASP.Net MVC and they will be helpful for all of them who are going for the interviews or preparing for the ASP.Net MVC.

Here I kept many questions which are related to all the versions of ASP.Net MVC to keep in mind that interviewer can ask the questions from various aspects.

1. What is MVC? 

Ans. MVC (Model View Controller) is one of the Software Architectural pattern which is built on 3 layers. So it is the pattern which basically talks about the separation of concern for a project. Here the 3 parts are having their own roles like:

a. Model - It is used as the Data Container or it can also have the business rules, functions, logic's etc.

b. View - It is mainly the UI (User Interface) part which is the main application built using the Web technologies like ASP.Net etc. It consists of the User Interface Design, representation of the information for the end users etc.

c. Controller - It is the mediator between the View and Model and used to control the requests and responses floating through the views and Model. The command, Actions, Events are the part of Controller in MVC. All the communication is done via Controller so we can say that Controller is the heart of MVC.

2. What is ASP.Net MVC? 

Ans. ASP.Net MVC is the Microsoft product based on the core MVC pattern. The Microsoft has taken the core concept of MVC and Designed the ASP.Net MVC structure for the Visual Studio which helps the developers to get the automated structure and on it, they can built the applications.

ASP.Net MVC provides the structure with the separation of concerns where each part of ASP.Net MVC application is separate and has no link among them. Apart from the separation of concerns, the Microsoft has provided the way to communicate between the separate components by using the other additional logic and libraries. These libraries supports in the connection, communication between the components, databases and other external components as well with small effort.

3. How ASP.net MVC is different than MVC?

Ans. ASP.Net MVC is the inherited form of Core MVC where Microsoft has designed their MVC patterns based on the original core MVC concept. The Microsoft also provided the new MVC structure (ASP.Net MVC) which has the inbuilt capabilities of communication with their components, connection with the database etc. The ASP.Net MVC has the good support for creating mobile application. We can create the Mobile applications in ASP.Net MVC using the predefined template.

4. What are the new features of ASP.Net MVC 2?

Ans. There are few major changes happened in the version MVC2. The Microsoft has more concentrated on the HTML Helpers, Validations support, Async controllers etc.Below are the few point which distinguishes the ASP.Net MVC 2 different than the previous versions:
a. New HTML Helpers with Strongly Typed
b. Model based validations- This is very useful feature where the validation is done in the Model and will be used throughout the application.
c. Automatic scaffolding feature also got introduces with this version.
d. Asynchronous controller support which enables the multiple tasks to run simultaneously. 
e. Html.RenderAction introduced to render the section/part of the page.

5. Explain MVC Architecture?
Ans. 

6. What are the new features of ASP.Net MVC 3?

7. What are the new features of ASP.Net MVC 4?

8. Explain ASP.Net MVC application life cycle?

9. Advantages of MVC Framework?

10. What do you mean by Separation of Concerns?

11. Where do we see Separation of Concerns in MVC?

12. What is Razor View Engine in ASP.Net MVC 3?

13. Explain the advantages of using routing in ASP.NET MVC?

14. What are the things that are required to specify a route ? Which is a better fit, Razor or ASPX?

15. How can you do authentication and authorization in ASP.Net MVC?

16. How to implement Windows authentication for ASP.Net MVC?

17. How do you implement Forms authentication in ASP.Net MVC? Mention some of the return types of a controller action method

18. Is ASP.Net MVC suitable for both Windows and web applications?

19. What are the benefits of using ASP.Net MVC?

20. Is MVC different from a three layered architecture?

21. What is the latest version of ASP.Net MVC?

22. What is the difference between each version of ASP.Net MVC?

23. What are HTML helpers in MVC?

24. What is the difference between "HTML.TextBox" vs "HTML.TextBoxFor" in ASP.Net MVC?

25. What is routing in MVC?

26. Where is the route mapping code written?

27. Can we map multiple URLs to the same action?

28. How can we navigate from one view to other view using a hyperlink?

29. How can we restrict MVC actions to be invoked only by GET or POST?

30. How can we maintain sessions in MVC?

31. What is the difference between tempdata, viewdata, and viewbag?

32. What are partial views in ASP.Net MVC?

33. How do you create a partial view and consume it in ASP.Net MVC 4?

34. How can we do validations in ASP.Net MVC?

35. Can we display all errors in one go? or Validation summery in ASP.Net MVC.

36. How can we enable data annotation validation on the client side?

37. What is Razor in MVC?

38. Why Razor when we already have ASPX?

39. How to implement AJAX in MVC

40. What kind of events can be tracked in AJAX?

41. What is the difference between ActionResult and ViewResult?

42. What are the different types of results in MVC?

43. What are ActionFilters in MVC?

44. Can we create our own custom view engine using MVC?

45. How to send result back in JSON format in MVC

46. What is WebAPI?

47. But WCF SOAP also does the same thing, so how does WebAPI differ? With WCF you can implement REST, so why WebAPI?

48. How can we detect that a MVC controller is called by POST or GET?

49. What is Bundling and Minification in MVC?

50. How does bundling increase performance?

51. How do we implement bundling in MVC?

52. How can you test bundling in debug mode?

53. Explain minification and how to implement it. How do we implement minification?

54. Explain Areas in MVC?

55. Explain the concept of View Model in MVC?

56. What kind of logic view model class will have?

57. How can we use two ( multiple) models with a single view?