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8,183 developer net interview questions shared by candidates

1) Right from the code we write till the code is compiled and executed, can you explain what happens behind the scenes? 2)What is managed and un-managed code? How unmanaged code is produced if we are writing the code in Visual Studio itself? 3) Where are the session variables, cache saved? 4) Where are the view state variables saved? 5)I visited a website using id and password in Google Chrome, I want to login to the same website in Internet Explorer without typing id and password, is it possible? if yes the how? 6) Questions in Interface, Polymorphism. 7) How does Facebook feed work? I upload picture and it shows up to your friend without him doing anything on the server? Can you explain? 8) I have a customer and he calls up and says that his application has been running slow, what are the best solutions that you propose? 9) In Banking applications as you have seen sometimes, your bank balance might show different that it actually was, it happens very rarely, why such things happen? 10) I have a variable of int type, is it possible to create user defined data type like int, float in .net? Explain.
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.NET Support Engineer

Interviewed at Microsoft

4★
Jun 29, 2020

1) Right from the code we write till the code is compiled and executed, can you explain what happens behind the scenes? 2)What is managed and un-managed code? How unmanaged code is produced if we are writing the code in Visual Studio itself? 3) Where are the session variables, cache saved? 4) Where are the view state variables saved? 5)I visited a website using id and password in Google Chrome, I want to login to the same website in Internet Explorer without typing id and password, is it possible? if yes the how? 6) Questions in Interface, Polymorphism. 7) How does Facebook feed work? I upload picture and it shows up to your friend without him doing anything on the server? Can you explain? 8) I have a customer and he calls up and says that his application has been running slow, what are the best solutions that you propose? 9) In Banking applications as you have seen sometimes, your bank balance might show different that it actually was, it happens very rarely, why such things happen? 10) I have a variable of int type, is it possible to create user defined data type like int, float in .net? Explain.

What is boxing and unboxing? What are assemblies and namespaces? What is the difference between const, readonly, and static Difference between abstract class and interface? What is the use of async and await in C#? What is a delegate? How is it different from an event? What is LINQ? Can you show an example? Difference between IEnumerable, IQueryable, List? What is Dependency Injection in C#? What are extension methods? What are access modifiers in C#?
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Dot NET Developer

Interviewed at HCLTech

3.5★
Jun 5, 2025

What is boxing and unboxing? What are assemblies and namespaces? What is the difference between const, readonly, and static Difference between abstract class and interface? What is the use of async and await in C#? What is a delegate? How is it different from an event? What is LINQ? Can you show an example? Difference between IEnumerable, IQueryable, List? What is Dependency Injection in C#? What are extension methods? What are access modifiers in C#?

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