Net Lead Interview Questions

4,977 net lead interview questions shared by candidates

🟦 .NET / Backend Can you explain the difference between an interface and an abstract class in C#? How do you implement dependency injection in a .NET Core application? How would you handle global exception handling in a Web API? What are some best practices for structuring a RESTful API in ASP.NET Core? Have you worked with Entity Framework or Dapper? When would you use one over the other? What is the role of async/await in .NET? Can you give an example? 🟧 Angular / Frontend How do you manage state in Angular applications? What is the difference between ngOnInit and the constructor in a component? How do you handle form validation in Angular? How do you communicate between components (parent-child and sibling-sibling)? What is the difference between observables and promises? ☁️ Azure / DevOps Which Azure services have you worked with? How would you deploy a .NET app to Azure? How do you manage application secrets in Azure? Have you worked with Azure DevOps pipelines? Can you describe the CI/CD process? 🧠 General / Logical Thinking Given a list of numbers, how would you return only the duplicates? Describe a situation where you had to debug a difficult issue.
avatar

Senior .NET Engineer

Interviewed at EPAM Systems

4
Apr 1, 2025

🟦 .NET / Backend Can you explain the difference between an interface and an abstract class in C#? How do you implement dependency injection in a .NET Core application? How would you handle global exception handling in a Web API? What are some best practices for structuring a RESTful API in ASP.NET Core? Have you worked with Entity Framework or Dapper? When would you use one over the other? What is the role of async/await in .NET? Can you give an example? 🟧 Angular / Frontend How do you manage state in Angular applications? What is the difference between ngOnInit and the constructor in a component? How do you handle form validation in Angular? How do you communicate between components (parent-child and sibling-sibling)? What is the difference between observables and promises? ☁️ Azure / DevOps Which Azure services have you worked with? How would you deploy a .NET app to Azure? How do you manage application secrets in Azure? Have you worked with Azure DevOps pipelines? Can you describe the CI/CD process? 🧠 General / Logical Thinking Given a list of numbers, how would you return only the duplicates? Describe a situation where you had to debug a difficult issue.

Difference between monolithic architecture and microservices. Difference between using a try-catch block with catch (Exception ex) { throw; } and not having a catch block. Difference between clustered and non-clustered index. What is a garbage collector? What is middleware? What is Entity Framework? Difference between inner join and outer join.
avatar

Senior .NET Engineer

Interviewed at EPAM Systems

4
Jan 20, 2026

Difference between monolithic architecture and microservices. Difference between using a try-catch block with catch (Exception ex) { throw; } and not having a catch block. Difference between clustered and non-clustered index. What is a garbage collector? What is middleware? What is Entity Framework? Difference between inner join and outer join.

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