Correct Answer : All of the Above.
Explanation :
Windows authentication : It is enabled by default. When Windows authentication is enabled, users are identified by their Microsoft Windows account names.
Forms authentication : In this authentication users are typically identified by a cookie. When a user is authenticated, an encrypted cookie is added to the user’s browser. As the user moves from page to page, the user is identified by the cookie.
.NET Passport authentication : It is a centralized service provided by Microsoft. .NET Passport allows users to create a single sign-in name and password to access any site that is uses .NET
Passport authentication : .NET Passport does only authentication not authorization. Passport simply tells a participating site who the user is. MSN and Hotmail uses .NET Passport authentication..
