Csharp

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C#.Net Interview Questions and their answer part 4.

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By Nishant Kumar 

Part 1 | Part 2 | Part 3 | Part 4 | part 5 Difference between an interface and abstract class. | How can you overload a method?   |  Difference between System.String and System.StringBuilder classes.   |  Define Delegate.   |  How is DLL Hell problem solved in .NET?   |  Ways to deploy an assembly.

Question - Difference between an interface and abstract class

Answer - In the interface all methods must be abstract;

In the abstract class some methods can be concrete.

In the interface no accessibility modifiers are allowed, which is possible in abstract classes.

Question - How can you overload a method?

Answer - Different parameter data types, different number of parameters, different order of parameters.

Question - Difference between System.String and System.StringBuilder classes.

Answer - System.String is immutable;

System.StringBuilder was designed with the purpose of having a mutable string where a variety of operations  can be performed.

Question - Define Delegate.

Answer - A delegate object encapsulates a reference to a method.

In C++ they were referred to as function pointers.

Question - How is DLL Hell problem solved in .NET?

Answer - Assembly versioning helps to resolve not only the library it needs to run , but also the version of the assembly.

Question - Ways to deploy an assembly.

Answer - MSI installer, a CAB archive, and XCOPY command.

Part 1 | Part 2 | Part 3 | Part 4 | part 5   

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