Ace the Top 10 Asp.net Interview questions

by Anannya Agrawal professional trainer for mobile and web applicatio The world of IT brings with it a world of opportunities for both professionals and aspirants. With Microsoft’s .NET development gaining severe momentum, an array of tools too are coming our way. Besides, the entire ecosystem will be able to offer a lot more.
.NET developers are a sought-after set of talented and versatile bunch within the programming arena. However, just like every market is, the .NET world is also a competitive one. The reason being that it requires specialization and a range of skills. So, if you aim to get your foot in the door of this space, you must hone your technical abilities.

Through this article, we have put together the top 10 questions you prepare yourself for before you walk through the interview room.

1) What is ASP.NET?
ASP.NET is an open-source server-side application framework that allows web developers to create dynamic web pages using the .NET framework. Developed by Microsoft, it will enable programmers to build dynamic websites, web services & web applications.

2) What is ASP.NET Web MVC Framework?

ASP.NET MVC is a web application framework on the .NET platform that helps build full-stack web applications by leveraging the Model-View-Controller pattern.

3) What is ASP.NET Web API Framework?

ASP.NET Web API allows you to build back-end web APIs that allow a range of clients to leverage, from the web to desktop to mobile. It makes up the server component in the RESTful (Representational State Transfer) architecture.

4) ASP.NET is an open-source framework. Explain

Microsoft provides the entire .NET server in open-source, which means that it is free to download. It comprises ASP.NET, .NET compiler, .NET Core Runtime, Framework & Libraries that let developers build with .NET on Windows, Linux, or Mac.

5) Explain the ASP.NET page cycle in brief.

ASP.NET undergoes a series of stages in the lifecycle of each page.

• Page request: This is where the user requests a page. ASP.NET then decides whether it should compile or reserve it from a cache.

• Page Start: The Request and Response objects are created.

• Page Initialization: Page controls initialize and themes are put into place.

• Page Load: ASP.NET will use the view state and control state properties to set control properties. Default values are placed in the controls.

• Postback event handling: The event sends out a trigger is the same page loads again.

• Rendering: ASP.NET saves the view state for the page and writes the output of rendering to the output stream. It takes place right before the user receives the entire web page.

• Unload: The client receives the rendered page. ASP.NET then unloads page properties

6) What is the web.config file & what is it used for?

The web.config file is highly essential since it contains the configuration settings for the application. By keeping the entire configuration separate from your code, you can easily change settings without code changes. You can also encrypt the configuration settings for increased security.

7) Which framework makes the most sense to use – ASP.NET MVC or ASP.NET Web API?

If you want to build a server component that a wide range of clients can use, ASP.NET Web API is the right choice. However, if the project is primarily used as a web application, ASP.NET MVC is the route.

8) What is view state in ASP.NET?

View state is where the data preserves page values and control values of Web Forms at the point of postback event handling. Data could be stored as hidden fields on the client web page.

9) What is the difference between custom controls and user controls?
Custom controls are compiled code, i.e., DLLs. These can be easily added to the toolbox to be used across multiple projects with a drag-and-drop approach. The controls are difficult to create, however, User Controls (.ascx) are just like pages (.aspx). These are easier to create; however, they are tightly knit concerning User Interface and code.

10) What are the different validators in ASP.NET?
ASP.NET validation controls define an essential role in validating the user input data. When the user provides an input, it must be validated before sending it across to the various application layers. The two types of validation in ASP.NET are:

• Client-Side Validation
• Server-Side Validation

Client-Side Validation:
Validating the client browser is known as Client-Side Validation. Here, you can use JavaScript to perform the Client-Side Validation.

Server-Side Validation:
The validation that occurs on the server is known as Server-Side Validation and is secure. The benefit that it brings is if the user ignores the Client-Side Validation, the problem can be found on the server-side.

The Validation Controls in ASP.NET are as follows:
• CompareValidator Control
• RangeValidator Control
• RegularExpressionValidator Control
• CustomFieldValidator Control
• ValidationSummary

These are just some of the frequently-asked questions that would come up during your interview. In addition to these, if you want a solid grip over the framework, consider opting for the best asp.net training program that is sure to help you build a strong foundation. Besides, the practical understanding will help you dive deeper into the theoretical concepts so that you ace every interview!

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Created on Nov 19th 2020 01:40. Viewed 415 times.

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