Asp.net interview questions

Asp.net interview questions

1.What is the difference between Request(”field”) and Request.Form(”field”)?

 The former term allows simultaneous querying of both the form fields and the query string fields.  

 

2.What is Server Variables collection?

 The ServerVariables collection holds the entire HTTP headers and also additional items of information about the server
.

3.What is ClientCertificate collection?

 A ClientCertificate is an encrypted number that is stored in a file on the user’s computer. This stores details of any security certificates included with the request.

4.What are the event handlers of Session Object?

 • Session _OnStart – This event will be fired when a new user begins a session with the web site. 

• Session_OnEnd – This event is called whenever a session terminates.

5.What is a TextStream object?

 It allows you to access(read/write) the contents of text files stored on the web server.

6.What is the difference between Cookies collection and Form/Querystring collection?

 Cookie collection does not have the Count property. Cookies can have multiple values for the same cookie name but each value can be referred using a key whereas in a Form/Querystring cookie each value

7.What is a Form collection?

 The Form collection holds the values of the form elements submitted with the POST method. This is the only way to generate a Form collection.

8.What are the attributes of the tags? What are their functions?

 The two attributes are ACTION and METHOD The ACTION gives the name of the ASP file that should be opened next by which this file can access the information given in the form.

9.What is Request Object?

 Gets information from the user. It has five collections by which values can be accessed. They are: Querystring, Form, Cookies, Server Variables & ClientCertificate

10.What is a FileSystemObject object?

 It provides access to the physical file system of the web server. It gets and manipulates information about all drives in a server, folders and sub-folders on a drive and files inside a folder.

11.What are the collections of Session Object?

 • Contents collection – contains all the variables established for a session without using the <OBJECT> tag. 

• Static collection – contains all the objects created with the <OBJECT> tag wi

12.What are the properties of Session Object?

 • SessionID – returns the session identification number for each user.

• Timeout – sets the timeout period assigned to the Session object for any application, in minutes.
• CodePage – determines the c

13.What is ASP (Active Server Pages)?

 ASP is a server side-scripting environment for building dynamic and interactive web pages. Since the scripts run on the server side, the web server does all the processing.

14.What is the difference between client-side script and server-side script?

 Scripts executed only by the browser without contacting the server is called client-side script. It is browser dependent. The scripting code is visible to the user and hence not secure. Scripts execut

15.What happens when a client submits a form which changes the value of an Application variable?

 A. Client actions cannot change Application variables. 

B. The change is not visible to any client until the application is stopped and started.
C. The change is only visible to future requests made by

16.What is Connection Pooling?

 Connection pooling is the process of managing the connections effectively and efficiently by optimiz

17.What are the advantages of Cookies over Session Object?

 • It informs each page what session the request belongs to when a user accesses during a session. 

• It retrieves all the session information stored on the server.
• Cookies can persist for a much long
Sessions are server side objects which travels between client and web server. Cookies will not be us

18.What is Extranet?

 An area of a web site available only to a set of registered visitors. 

Extranet is group of computers which are specific for a gruop may be using MAN

19.What is the order of execution for an ASP application?

 1) Global.asa 

2) Server-side Includes
3) Jscript scripts tagged within <SCRIPT> tags
4) HTML together with scripts tagged within <% … %> delimiters
5) VBScripts tagged within <SCRIPT>