This is a curated list of most frequently asked .NET Interview Questions and Answers that help candidates to prepare for ASP .NET interview question and answer that an interviewer might ask during the interview. In this list of ASP.NET interview question, there are most commonly asked basic to advanced ASP.NET interview question with detailed answers to help you clear the job interview easily.
There are given top frequently asked .Net interview questions and answers that has been asked in many companies. Let’s see the list of .Net Interview Questions for 4 years experience.
Table of Contents
.Net Interview Questions for 4 years experience
1) What is the ASP.NET Core?
ASP.NET Core is not an upgraded version of ASP.NET. ASP.NET Core is completely rewriting that work with the .net Core framework. It is much faster, configurable, modular, scalable, extensible, and has cross-platform support. It can work with both .NET Core and .net framework via the .NET standard framework. It is best suitable for developing cloud-based such as web applications, mobile applications, and IoT applications.
2) What is Namespace?
It’s a logical group of classes. For example, System.Web.UI namespace is a logical group of UI-related classes containing features such as text boxes, list control, etc.
Using keywords is used for using the namespace.
3) What’s the use of Response.Output.Write()?
We can write formatted output using Response.Output.Write().
4)In which event of page cycle is the ViewState available?
After the Init() and before the Page_Load().
5) Write an algorithm and program to determine whether or not a word is a palindrome.
We can do it in either of the following two ways:
a) Using a built-in function as in the following:
b) Without using a built-in function.
When I wrote the first program, the interviewer asked me to write the same without using a built-in function.
6)What are the various JSON files available in ASP.NET Core?
There are the following JSON files in ASP.NET Core :
- global.json
- launchsettings.json
- appsettings.json
- bundleconfig.json
- bower.json
- package.json
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7) Write down the name of all steps in the ASP.NET page life cycle?
- Page request
- Starting of page life cycle
- Page initialization
- Page Load
- Validation
- Postback event handling
- Page rendering
- Unload
8)What’s the difference between .NET and Laravel?
This is one of the more straightforward .NET interview questions you can ask. Most web developers will at least be familiar with alternative frameworks such as Laravel and should be able to discuss some of the differences between those platforms and .NET. This conversation will allow you to dig down and discover where candidates’ interests lie and how they view the role of .NET developer. For example, they may focus on:
- Languages (e.g. C# support in .NET versus Laravel’s support for PHP)
- Security
- Processing overheads
- •NET’s integration with Visual Studio
- Third-party libraries
- Open-source community support
9) Which statement is used to replace multiple if-else statements in code.
In Visual Basic, the Select-Case statement is used to replace multiple If – Else statements and in C#, the switch-case statement is used to replace multiple if-else statements.
10) How can we force the garbage collectors to run?
We can force the garbage collectors to run by using “System.GC.Collect()”.
11) How you can add an event handler?
Using the Attributes property of server side control.
e.g.
btnSubmit.Attributes.Add("onMouseOver","JavascriptCode();")12) How can we prevent browser from caching an ASPX page?
We can SetNoStore on HttpCachePolicy object exposed by the Response object’s Cache property:
Response.Cache.SetNoStore (); Response.Write (DateTime.Now.ToLongTimeString ());
13) What is the code to send an email from an ASP.NET application?
14) Which namespaces are necessary to create a localized application?
System.Globalization
System.Resources
15)What is the default timeout for a cookie?
30 minutes.
16)What is the main difference between sub-procedure and function?
The sub-procedure is a block of multiple visual basic statements within Sub and End Sub statements. It is used to perform certain tasks, such as changing properties of objects, receiving or processing data, and displaying an output. You can define a sub-procedure anywhere in a program, such as in modules, structures, and classes.
We can also provide arguments in a sub-procedure; however, it does not return a new value.
The function is also a set of statements within the Function and End Function statements. It is similar to sub-procedure and performs the same task. The main difference between a function and a sub-procedure is that sub-procedures do not return a value while functions do.
17) What is the file extension of web service?
The File extension of web service is .asmx.
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18)Can ASP.NET Core application work with full .NET 4.x Framework?
Yes. ASP.NET core application works with full .NET framework via the .NET standard library.
19) What are Razor Pages in ASP.NET Core?
This is a new feature introduced in ASP.NET Core 2.0. It follows a page-centric development model just like ASP.NET web forms. It supports all the features of ASP.NET Core.Example
@page <h1> Hello, Book Reader!</h1> <h2> This is Razor Pages </h2>
The Razor pages start with the @page directive. This directive handle request directly without passing through the controller. The Razor pages may have code behind files, but it is not really a code-behind file. It is a class inherited from PageModel class.
20) What are the components of ADO.NET?
The components of ADO.Net are Dataset, Data Reader, Data Adaptor, Command, connection.