400+ ASP.NET Interview Questions Practice Test [2023]

Web Forms vs MVC vs Web Pages

Page Life Cycle

State Management Techniques

ASP NET Controls

Validation Controls

Master Pages and Themes

Data Binding

ASP NET MVC:

Controllers and Actions

Razor View Engine

Model Binding

Routing in MVC

Filters

Entity Framework Integration

Dependency Injection in MVC

Advanced ASP NET Features:

Custom Control Development

Caching Strategies

Security in ASP NET

Managing Application State

Asynchronous Programming in ASP NET

Web API

SignalR

Testing and Debugging:

Unit Testing in ASP NET

Integration Testing

Error Handling and Logging

Performance Tuning

Browser Developer Tools

Using Application Insights

Test Driven Development (TDD) Practices

Deployment and Hosting:

Configuration Management

Hosting on IIS

Azure Web Apps Deployment

Docker and ASP NET

Load Balancing and Scalability

Continuous Integration/Continuous Deployment (CI/CD)

SSL and Secure Deployments

Miscellaneous and Emerging Trends:

Microservices with ASP NET

SPA Frameworks Integration (React, Angular)

Mobile Development with Xamarin

GraphQL with ASP NET

Serverless Computing with ASP NET

AI and Machine Learning Integration

Real-time Applications with WebSockets

B) Improves state management

C) Enhances server control

D) Easier database integration

Correct Answer: A) Simplifies complex applications

Explanation: MVC (Model-View-Controller) architecture in ASP NET offers a clean separation of concerns, which is particularly beneficial in complex applications. This separation allows developers to work on individual components (Model, View, or Controller) without impacting others, leading to more manageable and scalable code. It improves the application's testability and makes it more adaptable to changes, providing a significant advantage over traditional Web Forms.

What is the purpose of ViewBag in ASP NET MVC?

B) Database management

C) Error handling

D) URL routing

Correct Answer: A) Data transfer between controller and view

Explanation: ViewBag is a dynamic property provided by the MVC framework used to transfer data from a controller to a view. It's an easy and convenient way to pass data within an MVC application. Unlike ViewData, which requires typecasting, ViewBag automatically achieves this due to its dynamic nature. However, it's important to use it judiciously as it lacks the compile-time checking, making it prone to runtime errors if not handled correctly.

Which ASP NET feature is used for reusing a user interface layout across multiple pages?

B) Web Parts

C) Custom Controls

D) Themes

Correct Answer: A) Master Pages

Explanation: Master Pages in ASP NET are a powerful feature for maintaining a consistent layout across multiple web pages. By defining a common site template (header, footer, navigation menus, etc.), Master Pages allow content pages to embed their unique content within this shared framework. This not only ensures uniformity across the site but also simplifies maintenance and updates, as changes to the master layout automatically reflect across all associated content pages.

In ASP NET, what is the purpose of the Global.asax file?

B) Handling application-level events

C) Routing URL patterns

D) Managing user sessions

Correct Answer: B) Handling application-level events

Explanation: The Global.asax file, also known as the ASP NET application file, is used for handling application-level events triggered by ASP NET or by HTTP modules. These events include Application_Start, Application_End, Session_Start, and others. It serves as a central place to manage application-wide events and services, such as logging, error handling, or application initialization tasks. Understanding its role is critical for developers to effectively manage the application lifecycle and response to various global events.

Which protocol is primarily used for data transmission in Web API in ASP NET?

B) HTTP

C) FTP

D) SMTP

Correct Answer: B) HTTP

Explanation: ASP NET Web API primarily uses HTTP for data transmission. It is a framework for building HTTP services that can be accessed from various clients, including browsers and mobile devices. HTTP as a stateless protocol is an ideal choice for RESTful services provided by Web API, where each request is independent and carries enough information on its own. This choice leverages the existing web infrastructure and makes it easy to integrate with web clients using standard HTTP methods like GET, POST, PUT, and DELETE.