ASP.NET Interview Questions and Answers

What setting must be added in the configuration file to deny a particular user from accessing the secured resources?

Ans- To deny a particular user form accessing the secured resources, the web.config file must contain the following code:

<authorization >
<deny users="username" />
</authorization>

 What is the difference between page-level caching

and fragment caching?

Ans- In the page-level caching, an entire Web page is cached; whereas, in the fragment caching, a part of the Web page, such as a user control added to the Web page, is cached.


 How can you assign page specific attributes in an ASP.NET application?

Ans- The @Page directive is responsible for this.

 What is a Cookie? Where is it used in ASP.NET?

Ans- Cookie is a lightweight executable program, which the server posts to client machines. Cookies store the identity of a user at the first visit of the Web site and validate them later on the next visits for their authenticity. The values of a cookie can be transferred between the user's request and the server's response.

What does the .WebPart file do?

Ans- The .WebPart file explains the settings of a Web Parts control that can be included to a specified zone on a Web page.
 

What are the event handlers that can be included in the Global.asax file?
Ans- The Global.asax file contains some of the following important event handlers:

• Application_Error
• Application_Start
• Application_End
• Session_Start
• Session_End 

How can you enable impersonation in the web.config file?

Ans- To enable impersonation in the web.confing file, you need to include the <identity> element in the web.config file and set the impersonate attribute to true as shown in the following code snippet:
<identity impersonate = "true" />