.NET continues to be one of the most widely used frameworks for enterprise applications. If you’re interviewing for a .NET Developer role, these are some of the most frequently asked questions.
C# Fundamentals
- What is the difference between .NET Framework and .NET 8?
- Explain the CLR.
- What is garbage collection?
- What is the difference between value types and reference types?
- What is boxing and unboxing?
- What are delegates?
- What are events in C#?
- What are extension methods?
- What is LINQ?
- What is asynchronous programming?
ASP.NET Core
- What is ASP.NET Core?
- Explain Dependency Injection.
- What is Middleware?
- What are Minimal APIs?
- What is Model Binding?
Entity Framework
- What is Entity Framework Core?
- What is Code First?
- What is Lazy Loading?
- What is eager loading?
- How do you optimise EF Core performance?
APIs & Architecture
- How do you build REST APIs?
- What is Clean Architecture?
- What is CQRS?
- What are Microservices?
- What is Event-Driven Architecture?
Cloud & DevOps
- What is Azure App Service?
- How do you deploy a .NET application?
- What is Docker?
- What is Kubernetes?
- How would you design a scalable cloud-native .NET application?
Final Tip
Modern .NET interviews often go beyond C#. Employers expect experience with ASP.NET Core, cloud platforms such as Azure, Docker, Kubernetes, CI/CD pipelines and scalable application architecture. Prepare practical examples that demonstrate how you’ve applied these technologies in real-world projects.