08/31/2024 | 15 minutes to read
dotnet
Here is a List of essential .NET Interview Questions and Answers for Freshers and mid level of Experienced Professionals. All answers for these .NET questions are explained in a simple and easiest way. These basic, advanced and latest .NET questions will help you to clear your next Job interview.
This document discusses interview questions for .NET developers with varying levels of experience, ranging from 3 to 5 years. These questions are frequently asked during interviews for .NET developer or .NET full-stack developer roles. The questions cover various .NET technologies, including ASP.NET MVC, C#, Web API, and other related modules. Knowing the answers to these common interview questions is essential for successfully clearing a .NET developer interview. C# Programming language is used to show examples.
Asynchronous Programming:
1. Explain the difference between async and await keywords in C#.
2. How do you handle exceptions in asynchronous code?
3. Describe the Task Parallel Library (TPL) and its use cases.
Dependency Injection:
4. What is Dependency Injection (DI), and why is it important?
5. Explain the different types of DI (constructor, property, and method injection).
6. How would you implement DI in a .NET application?
Entity Framework Core:
7. Explain the different types of relationships in Entity Framework Core (one-to-one, one-to-many, many-to-many).
8. How do you handle complex queries and projections in Entity Framework Core?
9. Describe the different approaches to database migrations in Entity Framework Core.
Web API:
10. What is the difference between REST and SOAP web services?
11. How do you implement versioning in a Web API?
12. Explain the concept of content negotiation in Web API.
Security:
13. How do you implement authentication and authorization in a .NET application?
14. Describe the different types of authentication mechanisms (e.g., JWT, OAuth, OpenID Connect).
15. What are the best practices for handling sensitive data in a .NET application?
Multithreading and Parallel Programming:
16. Explain the difference between a thread and a process.
17. How do you handle thread synchronization in .NET?
18. Describe the use cases for parallel programming in .NET applications.
Design Patterns:
19. Explain the Observer pattern and its implementation in .NET.
20. How would you implement the Singleton pattern in a multi-threaded environment?
21. Describe the Decorator pattern and its use cases.
Performance and Optimization:
22. How do you profile and optimize the performance of a .NET application?
23. Explain the concept of garbage collection in .NET and its impact on performance.
24. Describe techniques for optimizing database queries in a .NET application.
Microservices and Distributed Systems:
25. What are microservices, and what are the benefits of using them?
26. How do you handle communication between microservices?
27. Explain the concept of eventual consistency and its implications in distributed systems.
Cloud and Containerization:
28. Describe the benefits of using cloud services (e.g., Azure, AWS) for .NET applications.
29. How do you deploy and manage .NET applications in a containerized environment (e.g., Docker)?
30. Explain the concept of serverless computing and its use cases in .NET applications.
I am not going to answer these basic questions, these are just for your reference.
1. What is .NET?
2. What are the different versions of .NET Framework?
3. What programming languages can be used with .NET?
4. What is the Common Language Runtime (CLR)?
5. What is the purpose of the .NET Standard?
6. What is the role of the Intermediate Language (IL) in .NET?
7. What is the purpose of the Garbage Collector in .NET?
8. What is the difference between an Assembly and a Namespace in .NET?
9. What is the role of the Base Class Library (BCL) in .NET?
10. What is the purpose of the Common Type System (CTS) in .NET?
11. What is the difference between a Value Type and a Reference Type in .NET?
12. What is the purpose of the Common Language Specification (CLS) in .NET?
13. What is the role of the Just-In-Time (JIT) compiler in .NET?
14. What is the purpose of the Application Domains in .NET?
15. What is Tiered compilation in .NET Core?
16. What is global.json file?
17. What is Live Unit Testing in Visual Studio?
18. What is Managed Code?
For more visit Managed Code.
19. How does execution of code work in .NET?
For more visit IL and Code execution in .NET.
1. How much will you rate yourself in .NET?
When you attend an interview, Interviewer may ask you to rate yourself in a specific Technology like .NET, So It's depend on your knowledge and work experience in .NET. The interviewer expects a realistic self-evaluation aligned with your qualifications.
2. What challenges did you face while working on .NET?
The challenges faced while working on .NET projects are highly dependent on one's specific work experience and the technology involved. You should explain any relevant challenges you encountered related to .NET during your previous projects.
3. What was your role in the last Project related to .NET?
This question is commonly asked in interviews to understand your specific responsibilities and the functionalities you implemented using .NET in your previous projects. Your answer should highlight your role, the tasks you were assigned, and the .NET features or techniques you utilized to accomplish those tasks.
4. How much experience do you have in .NET?
Here you can tell about your overall work experience on .NET.
5. Have you done any .NET Certification or Training?
Whether a candidate has completed any .NET certification or training is optional. While certifications and training are not essential requirements, they can be advantageous to have.
We have covered some frequently asked .NET Interview Questions and Answers to help you for your Interview. All these Essential .NET Interview Questions are targeted for mid level of experienced Professionals and freshers.
While attending any .NET Interview if you face any difficulty to answer any question please write to us at info@qfles.com. Our IT Expert team will find the best answer and will update on the portal. In case we find any new .NET questions, we will update the same here.