Asp.Net interview Questions and Answers Part 5

1.) What is built-in object in asp.net?                                                                          

• Application
• Session
• Context
• Request
• Server
• Trace
• Response

2.) How to use connection string in web.config file?                                                 

<appSettings>

<add key="msg" value="msdotnet"/>

<add key="app_con" value="data source=my-pc;integrated security=yes;database=mas"/>

 </appSettings>\

Note:

App settings makes the code faster.
It allows better codes separation and clarity.

3.) What are the different types of directories used in .Net ?                                   

• @Page
• @Import
• @Control
• @Register
• @Reference
• @Output Cache
• @Assembly
• @Implements

4.) What is the default timeout of session in asp.net ?                                                    
20 Min

5.) What is Namespace used for Globalization and Localization in asp.net ?       

• System.Globalization
• System.Resources

6.) How to know this website is made in asp.net,asp,jsp,html,php etc.?                

  We can see the extension of  each type of web application in url bar as given below:-

• ASP.NET  ---> .aspx
• ASP   --->.asp
• java ---> .jsp
• HTML ---> .html
• PHP --->.php

But some time you have not found any extension in url bar in web application, then you have to put each extension in url bar one by one and check, if no error is found then you can easily predict that application. 
7.) What is caching concepts in asp.net ?                                                                               
Caching is a place where data is stored temporarily. This data can be stored for a specific time period on the server or client system.
More Details.....

8.) What are the different types of caching in asp.net ?                                                   

• Output Caching
• Fragment caching
• Data caching

More Details.....

9.) What is different between Execute Scalar and ExecuteNonQuery ?                    
ExecuteScalar :-->It Returns output value.It is basically used for fetching a single value.
ExecuteNonQuery:--> It does not return any value but number of rows affected by the Query.It is normally used to execute Insert and update commands.

10.) Can we run asp.net web application without web.config file ?                             
Yes.