MVC stands for Model-View-Controller, which is a software architectural pattern used primarily for designing and developing user interfaces. It divides an application into three interconnected components to separate the internal representations of information from the ways that information is presented and accepted by the user. Here’s a breakdown of each component:

1. Model: The Model represents the application’s data and core business logic. It is responsible for managing the application’s data and business rules. This component interacts with the database, performs data validation, and implements the application’s logic. The Model notifies the View of any changes in the data so that the user interface can be updated accordingly.
2. View: The View is responsible for presenting the data to the user and receiving input from the user. It displays the user interface elements such as buttons, forms, textboxes, etc., and presents the data obtained from the Model to the user. The View sends user input back to the Controller for processing.
3. Controller: The Controller acts as an intermediary between the Model and the View. It receives user input from the View, processes it, and updates the Model accordingly. It also retrieves data from the Model and sends it to the View for display. The Controller interprets user actions (e.g., clicking a button, submitting a form) and invokes appropriate operations on the Model.

The MVC pattern promotes the separation of concerns, making the application easier to understand, maintain, and extend. It enables developers to work on different components of the application independently, facilitating parallel development. Additionally, it enhances testability by allowing for unit testing of individual components.

MVC is widely used in web development frameworks like Ruby on Rails, Django, Laravel, ASP.NET MVC, and others, as well as in desktop and mobile application development. Its modular and organized structure makes it a popular choice for building scalable and maintainable software applications.

Most Important of MVC Interview Question |

1. What is MVC and why is it used?

• This question assesses the candidate’s understanding of the MVC architecture and its advantages in software development.

1. Explain the components of MVC (Model, View, Controller) and their roles.

• This tests the candidate’s ability to articulate the responsibilities of each component within the MVC pattern.

1. What are the advantages of using MVC?

• Interviewers may ask this to gauge the candidate’s awareness of the benefits of using MVC, such as separation of concerns, easier maintenance, and testability.

1. How does data flow between the Model, View, and Controller in MVC?

• Understanding how information moves between the components is crucial for effective development in MVC.

1. What is the role of routing in MVC?

• Routing determines how URLs map to controllers and actions in MVC applications. Candidates should understand its importance in handling incoming requests.

1. Explain the concept of ViewData, ViewBag, TempData, and Session in MVC.

• These are mechanisms for passing data between controllers and views or between different parts of an application. Candidates should understand when and how to use each.

1. Differentiate between TempData, ViewBag, and ViewData.

• This tests the candidate’s ability to distinguish between various mechanisms for passing data in MVC and when to use each.

1. What is the role of action filters in MVC?

• Action filters are used to perform logic before or after executing controller actions. Candidates should understand their purpose and how to implement them.

1. What is the difference between RedirectToAction and RedirectToRoute in MVC?

• Both are used for redirection, but they operate differently. Candidates should understand their distinctions and when to use each.

1. Explain the concept of scaffolding in MVC.
   • Scaffolding is a code generation technique used to quickly create basic CRUD (Create, Read, Update, Delete) functionality in MVC applications. Candidates should be familiar with its usage and customization.