There is No other type of .Net framework, or we can say this is wrong question. For your understanding below I am giving brief introduction of .Net framework.The .NET Framework is a technology that supports building and running the next generation of applications and XML Web services. The .NET Framework is designed to fulfill the following objectives:To provide a consistent object-oriented programming environment whether object code is stored and executed locally, executed locally but Internet-distributed, or executed remotely. To provide a code-execution environment that minimizes software deployment and versioning conflicts. To provide a code-execution environment that promotes safe execution of code, including code created by an unknown or semi-trusted third party. To provide a code-execution environment that eliminates the performance problems of scripted or interpreted environments. To make the developer experience consistent across widely varying types of applications, such as Windows-based applications and Web-based applications. To build all communication on industry standards to ensure that code based on the .NET Framework can integrate with any other code. .Net framework consists of the common language runtime and the .NET Framework class library. The common language runtime is the foundation of the .NET Framework. You can think of the runtime as an agent that manages code at execution time, providing core services such as memory management, thread management, and remoting, while also enforcing strict type safety and other forms of code accuracy that promote security and robustness. Visit and get the know more :- http://www.cetpainfotech.com/technology/dot-net-training

windows:it is used to provide the security for intranet and inter net apl across the n/w......up to asp.net 3.5 it is default mode 

Hai Krishna , Please Check the Spelling for Windows in your Answer and Update with Correct one. Thank You

Forms, Widows and Passport in that Windows is default authentication mode.

Windows, Forms, Passport and None.