Interview Questions for MVC

 MVC (full form Model View Controller)is a software architecture or application design model containing 3 interconnected verticals or portions. These 3 portions are the model (data associated with the application), the view (which is the user interface of an MVC application), and the controller (the processes that are responsible for handling the input).

The MVC model is normally used to develop modern applications with user interfaces. It provides the central pieces for designing a desktop or mobile application, as well as modern web applications.

In this article, you will find a collection of real-world MVC interview questions with inline answers that are asked in top tech companies. So, here we go!

MVC Interview Questions and Answers

1. Explain Model, View and Controller in Brief.

A model can be defined as the data that will be used by the program. Commonly used examples of models in MVC are the database, a simple object holding data (such as any multimedia file or the character of a game), a file, etc.

A view is a way of displaying objects (user interfaces) within an application. This is the particular vertical through which end users will communicate.

A controller is the third vertical which is responsible for updating both models and views. It accepts input from users as well as performs the equivalent update. In other words, it is the controller which is responsible for responding to user actions.

2. What are the different return types used by the controller action method in MVC?

The various return types of controller action methods in MVC are:

1. View Result
2. JSON Result
3. Content Result
4. Redirect Result
5. JavaScript Result

3. Name the assembly in which the MVC framework is typically defined.

In the System.Web.Mvc, the MVC framework is usually defined.

4. Explain the MVC Application life cycle.

Web applications usually have 2 primary execution steps. These are:

• Understanding the request.
• Sending an appropriate response based on the type of request.
• The same thing can be related to MVC applications also whose life cycle has 2 foremost phases:
• For creating a request object.
• For sending the response to any browser.

5. What are the various steps to create the request object?

In order to create a request object, we have to go through 4 different steps. These are:

Step 1: Fill the route.

Step 2: Fetch the route.

Step 3: Create a request context.

Step 4: Create a controller instance.

6. Explain some benefits of using MVC?

Some common benefits of MVC are:

Support of multiple views: Since there is a separation of the model from its view, the user interface (UI) gets the capability to implement multiple views of the same data concurrently.

Faster development process: MVC has the ability to provide rapid and parallel development. This means that while developing an application, it is more likely that one programmer will perform some action on the view and in parallel, another can work on creating the application’s business logic.

SEO-friendly development: The platform of MVC can support the SEO-friendly development of web pages or web applications.

More Control: The MVC framework (of ASP.NET) offers additional control over HTML, CSS and JavaScript than that of traditional WebForms.

Lightweight: MVC framework does not make use of View State which eventually minimises the requested bandwidth to some extent.

7. Explain in brief the role of different MVC components?

The different MVC components have the following roles:

Presentation: This component takes care of the visual representation of a particular abstraction in the application.

Control: This component takes care of the consistency and uniformity between the abstraction within the system along with their presentation to the user. It is also responsible for communicating with all other controls within the MVC system.

Abstraction: This component deals with the functionality of the business domain within the application.

8. How will you maintain the sessions in MVC?

The sessions of an MVC can be maintained in 3 possible ways:

1. viewdata
2. temp data and
3. view bag

9. What do you mean by partial view of MVC?

A partial view can be defined as a portion of HTML that is carefully injected into an existing DOM. Partial views are commonly implemented for componentizing Razor views, making them simpler to build and update. Controller methods can also directly return the partial views.

10. Explain in brief the difference between adding routes in a webform application & an MVC application?

We make use of the MapPageRoute() which is of the RouteCollection class for adding routes in a webform application. Whereas, the MapRoute() method is used for adding routes to an MVC application