ASP.net Interview Questions and Answers

Fragment caching is used to cache a portion of a target page instead of the whole page. The target portion can be generated by request. For this, developers can create a control with the below syntax:

<%@ OutputCache Duration="120" VaryByParam="CategoryID;SelectedID"%>

Developers use the following syntax code to send email from an ASP.NET application:

• MailMessagemailMess = new MailMessage ();
• mailMess.From = "[email protected]"
• mailMess.To = "[email protected]"
• mailMess.Subject = "Test email";
• mailMess.Body = "Hi This is a test mail for bestinterviewquestion.";
• SmtpMail.SmtpServer = "localhost";
• SmtpMail.Send (mailMess);

Machine config is severed specific, whereas web config is specific to a web application. Only one machine config file can be present on a server, but multiple web config files can be implemented into an application.

This process is used to implement security based on roles assigned to different user groups in an organization. We can allow or deny permissions to users based on their organizational role.

Yes, it is possible to apply themes to an ASP.NET application. Developers can specify them in the web.config file with following syntax:

<configuration>

<system.web>

<pages theme="Windows7">

</system.web>

</configuration>

In weak typing, the variable data types are checked at runtime, whereas in strong typing, the data types of variable are checked at compile time. There is no chance of compilation error in strong typing.

ASP.NET has two types of cookies:

• Persistent Cookie: presents on a user’s machine for a specified period of its expiry
• Session Cookie: presents on the client machine for only a single session, until the user doesn’t log out.

SQL invalidation directly invalidates the data present in the cache when a change is applied in the database that is copied to cache earlier. Compared to this, SQL notification triggers only when there is a change in the data that is made a copy in the cache.