The const keyword is used to modify a declaration of a field or local variable. It specifies that the value of the field or the local variable cannot be modified.

In this mode the users are stored in windows local user groups.

WCF services can be hosted in multiple protocols like http, TCP etc. Web services can only be hosted on Http protocol.

Some methods in abstract classes can have implementation.

This object creates a connection to the database. If you want to do any operation on the database you have to first create a connection object.

The whole point about strong names is to ensure that the clients (UI, External components etc) who is consuming the DLL knows that the DLL was published from a valid source

This is one of the important and most asked.NET interview questions. Delegate is basically an abstract strong pointer to a function or method while events are higher level of encapsulation over delegates.

Windows API calls are not COM based and they are invoked through Platform Invoke Services.

Tracing: - Tracing is a way to monitor the execution of your ASP.NET application. You can record exception details and program flow in a way that doesn't affect the program's output.

A transaction is a sequence of operations performed as a single logical unit of work. A logical unit of work must exhibit four properties, called the ACID (Atomicity, Consistency, Isolation, and Durability) properties, to qualify as a transaction:

There are three types of replication supported by SQL SERVER:-

A class which is declared inside the body of another class is called as InnerClass.

Sometimes I am surprised with some questions which come up during .NET interview and this one is one of them. I really do not understand why people ask such questions and how useful it is practically.

The Native Image Generator utility (Ngen.exe) allows you to run the JIT compiler on your assembly's MSIL and generate native machine code which is cached to disk.

This is not one of the .NET typical interview question but as a developer you would be interested in knowing that how to add your windows application icon in to the task bar.