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Top .NET Interview Questions and Answers You Need to Prepare

by Interview Kickstart Team in Interview Questions
October 19, 2022

Top .NET Interview Questions and Answers You Need to Prepare

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Developed by Microsoft, the .NET framework is most widely used to build, deploy and run applications on Windows and the web. It encompasses ASP .Net and languages such as VB .Net, Cobol, Perl, C#, etc.

Among coders, it is regarded as one of the most renowned frameworks. So the requirement for a proficient .Net developer is very high. So, we have compiled this comprehensive guide about top .Net interview questions and answers that will help you prepare for your next interview.

Similarly, Interview Kickstart can help you understand the required skills to grab jobs at top tech companies in your learning journey. When you start your prep, be sure to check out our technical interview checklist, interview questions page, and salary negotiation ebook to get interview-ready! 

We have trained over 9,000 software engineers, and we know what it takes to crack the most challenging tech interviews. Since 2014, Interview Kickstart alums have landed lucrative offers from FAANG and Tier-1 tech companies, with an average salary hike of 49%. The highest ever offer received by an IK alum is a whopping $933,000!

Here, you get the rare opportunity to learn from expert instructors who are hiring managers and tech leads at Google, Facebook, Apple, and other top Silicon Valley tech companies.

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Here’s what we’ll discuss in this article:

  • What Does a .Net Developer do?
  • What are the Common Components of .Net Framework?
  • Benefits of Learning .Net Development
  • Top 10 .Net Interview Questions
  • Sample .NET Questions for Practice
  • ASP.NET Interview Questions
  • How to Prepare for a .NET Interview?
  • FAQs on .Net Interview Questions

What Does a .Net Developer Do?

The main role of a dot net developer is to develop applications that can be run across various platforms. A .Net developer can easily develop applications in a native platform and build a lucrative career profile. 

A .Net developer develops classes, libraries, and APIs, and runs, debugs, and deploys code onto the web or windows applications. They make use of object-oriented programming while working on this framework.

What are the Common Components of .Net Framework?

Before we look at the dot net interview questions, let’s understand some of the components that make up the .Net framework. They are as follows:

  • .Net Class Library
  • Framework Class Library
  • Base Class Library
  • Language Runtime
  • Application Domain
  • Common Type System
  • Profiling
  • Common Language Run-time

Benefits of Learning .Net Development

Ability to build cross-platform applications

Training in .Net development helps a programmer create dynamic web applications and websites that can be run on various platforms. It is also a supportive tool for developing mobile applications.

Doesn’t require much coding

The code size is smaller, so website developers can save their coding time while developing larger apps.

Helps you learn multiple concepts

It’ll help a developer get familiar with a range of design and architectural patterns.

Top 10 .Net Interview Questions

Here is a list of the most frequently asked dot net interview questions in technical interviews. Examine these dot net interview questions and answers to understand better how to formulate solutions for .NET framework and .NET core questions.

Q1. What is the .Net framework?

.Net is a platform provided by Microsoft to build applications using Windows. A .Net developer handles performance, testing, security, and scalability of web and mobile applications and develops websites, desktop and mobile applications.

Q2. What languages does the .Net framework support?

The .Net Framework supports more than 60 languages, including VB.NET, Cobol, Perl, C#, C++, and F#.

Q3. What does JIT stand for?

JIT means Just in Time. JIT is a compiler used to easily convert intermediate code into native code.

The code gets converted into native language or byte code during execution. Native code helps the CPU understand hardware specifications. The native code is stored so that it is accessible for subsequent calls.

Q4. What is CLS?

CLS or Common Language Specification is a set of rules that developers use to ensure inter-language compatibility. These apply to all .Net compliant languages. 

Q5. What is MSIL?

MSL stands for Microsoft Intermediate Language. This provides the instructions for calling methods, initializing and storing values operations such as memory handling, exception handling, etc.

Q6. What is a CTS?

CTS or Common Type System is a set of structured rules that help determine what data type should be assigned to corresponding values given by a user. It tells how a data type should be declared, defined, and used in the program and describes what data types will be used in the application.

You can design your classes by following the rules in the CTS. A data type declared in a particular programming language can be called by an application developed in another language through CTS.

Q7. What is CLR?

CLR means Common Language Runtime. It is a building block for many applications and is one of the most important components of the .Net Framework.

An application written in C# gets compiled and converted to intermediate code. CLR then takes this code and processes memory management, security protocols, libraries, and thread management. It forms a stable environment for executing applications.

Q8. What is the difference between managed code and unmanaged code in .NET?

Q9. What is an assembly in .NET?

Assemblies are the simplest logical units in an application. These are required to build and deploy an application using the .Net framework. These could also be considered as a collection of DLL or executable files.

Q10. What is the meaning of LINQ?

LINQ stands for Language Integrated Query. It was released in 2008 to provide users with a host of features around the .Net framework. A major highlight of LINQ is that it allows users to manipulate data without depending on its source.

Sample .Net Interview Questions for Practice

Once you’ve studied the dot net interview questions and answers listed above, practice these sample questions to strengthen your .NET basics.

  1. What is a delegate in .NET?
  2. List the events in the page life cycle.
  3. What is an Assembly? What are the different types of Assemblies?
  4. What are an EXE and a DLL?
  5. What is Caching?
  6. What is Global Assembly Cache?
  7. What is MVC?
  8. What is the difference between Function and Stored procedure?
  9. Explain Code Access Security and its different components.
  10. What is a Garbage Collector?
  11. What are boxing and unboxing?
  12. What is BCL?

ASP.NET Interview Questions

  1. What is ASP.NET?
  2. What is the application domain?
  3. What are the different validators in ASP.NET?
  4. How can we apply themes to an ASP.NET application?
  5. What are ASP.NET security controls?
  6. What is an HTTP handler?
  7. What are the different types of cookies in ASP.NET?
  8. Is ASP.NET different from ASP?
  9. What is the function of webHostBuilder()?
  10. Differentiate between ASP.NET core and .NET core.

How to Prepare for a .NET Interview?

.Net is a sum of many concepts. It could be worked upon using 60 programming languages and has many hidden aspects to dive into. To start your prep, the following tips would certainly help:

  • Be thorough with your fundamentals and learn some basics of .Net and website development.
  • Before the interview, practice  as many coding questions as you can. It aids in the development of confidence.
  • Go through some previously asked questions of the company you’re applying to. 
  • Before attending the actual interview, conduct mock interviews with a friend or colleague. This boosts your confidence, and you’ll get constructive feedback.

We hope that these.NET interview preparation tips will assist you in acing your interview. The dot net interview questions listed in this article are appropriate for fresher and experienced developers. You will be better prepared if you practice these basic and advanced dot net interview questions.

FAQs on .Net Interview Questions

Q1. Are .Net Developer jobs in demand?

.Net has a great growth prospect. People with higher experience in .Net are in demand today. With the arrival of ASP.NET, .NET is now one of the leading web application development frameworks, especially for dynamic website development.

Q2. What is the average salary of a .Net Developer?

As per indeed.com’s report of December 2021, the average salary of a .Net developer in the US is around $95,000.

Q.3 What should I prepare for a .Net Developer interview?

Work on topics like frameworks, dynamic website development, web applications, ASP, C#, Object-oriented programming, mobile application developments, etc.

Q4. What are the screening questions asked in .Net Developer interviews?

The questions asked in a dot net interview are: What is the .Net framework? What languages does the .Net framework support? What are the most important aspects of .Net? Explain garbage collection. Explain how to execute managed code and more.

Ready to Nail Your Next Tech Interview?

Whether you’re a coding engineer gunning for a software developer or software engineer roles, a tech lead, or you’re targeting management positions at top companies, IK offers courses specifically designed for your needs to help you with your technical interview preparation!

If you’re looking for guidance and help with getting started, sign up for our FREE webinar. As pioneers in the field of technical interview preparation, we have trained thousands of software engineers to crack the most challenging coding interviews and land jobs at their dream companies, such as Google, Facebook, Apple, Netflix, Amazon, and more!

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How you can accelerate your learnings
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