What are the new features of ASP.NET AJAX 4.0?

If I’m developing an application that must accommodate multiple security levels though secure login and my ASP.NET web application is spanned across three web servers (using round-robin load balancing) what would be the best approach to maintain login-in state for the users?

Why to create a custom role provider?

Components of the ASP.NET AJAX architecture?

Default session timeout value for an ASP.NET application or website?

To enable single-sign-on across multiple ASP.NET applications. Which statement will be true?

Which file extension will not be served over HTTP and any direct URL request for it is automatically rejected?

Not a drawback of cookies?

Problems with maintaining session state in ASP?

You are posting values from an HTML form to an ASP page. The HTML form contains a radio button group named mstatus with the following definition: In the ASP page, how will you determine which radio button was selected by the user?

What does the HTTP_USER_AGENT server variable represent?