What is an assembly?

Answer:

PreCompiled code that can be executed by the .NET runtime environment. It can be an .exe or .dll

What are different kind of assemblies? What is satellite assembly and public assembly?

Answer:

There are three types of assemblies:

a.Public Assembly:dll which can be used by multiple applications at a time. It is generally stored in GAC(Global Assembly Cache). 

b.Private Assembly:It is used by only one application and generally stored in the Application specific folder.

c.Satellite Assembly:A Satellite Assembly contains only static objects such as images and other non-executable files such as resource-only files that are required by the application.