MVC

http://www.dotnetobject.com/Thread-MVC-asp-net-interview-question-answer

The MVC programming model is a lighter alternative to traditional ASP.NET (Web Forms). It is a lightweight, highly testable framework, integrated with all existing ASP.NET features, such as Master Pages, Security, and Authentication.

MVC is a framework for building web applications using a MVC (Model View Controller) design:

• The Model represents the application core (for instance a list of database records).
• The View displays the data (the database records).
• The Controller handles the input (to the database records).

The MVC model defines web applications with 3 logic layers: The business layer (Model logic) The display layer (View logic) The input control (Controller logic)   Benefits: The MVC separation helps you manage complex applications, because you can focus on one aspect a time. For example, you can focus on the view without depending on the business logic. It also makes it easier to test an application. The MVC separation also simplifies group development. Different developers can work on the view, the controller logic, and the business logic in parallel. Web servers will normally map incoming URL requests directly to disk files on the server. For example: an URL request like "http://www.w3schools.com/default.asp" will map directly to the file "default.asp" at the root directory of the server. The MVC framework maps differently. MVC maps URLs to methods. These methods are in classes called "Controllers". Controllers are responsible for processing incoming requests, handling input, saving data, and sending a response to send back to the client.