ASP.NET Refresher

Question 1

Select extension of file in asp.net

Answer 1

.aspx (.aspx)

Question 2

Select protocol is used to call a web service

Answer 2

HTTP

Question 3

What is MVC? IN ASP.NET CONTEXT?

Answer 3

Framework

Question 4

Select the event which is NOT in page life cycle.

Answer 4

Page_Unload (Page_Unload)

Question 5

Select the session state management option which is NOT available in ASP.NET.

Answer 5

In-Out-Process (In-Out-Process)

Question 6

In which event of page cycle is the ViewState available?

Answer 6

After the Init() and before the Page_Load().

Question 7

From which base class all Web Forms are inherited?

Answer 7

Page class

Question 8

What are the different validators in ASP.NET?

Answer 8

Required field Validator
Range Validator
Compare Validator
Custom Validator
Regular expression Validator
Summary Validator

Question 9

Which validator control you use if you need to make sure the values in two different controls matched?

Answer 9

Compare Validator control.

Question 10

What is ViewState?

Answer 10

ViewState is used to retain the state of server-side objects between page post backs.

Question 11

In which event of page cycle is the ViewState available?

Answer 11

After the Init() and before the Page_Load().

Question 12

What is the difference between Server.Transfer and Response.Redirect?

Answer 12

In Server.Transfer page processing transfers from one page to the other page without making a round-trip back to the client’s browser. This provides a faster response with a little less overhead on the server. The clients url history list or current url Server does not update in case of Server.Transfer.

Response.Redirect is used to redirect the user’s browser to another page or site. It performs trip back to the client where the client’s browser is redirected to the new page. The user’s browser history list is updated to reflect the new address.

Question 13

Where the viewstate is stored after the page postback?

Answer 13

ViewState is stored in a hidden field on the page at client side. ViewState is transported to the client and back to the server, and is not stored on the server or any other external source.

Question 14

How long the items in ViewState exists?

Answer 14

They exist for the life of the current page.

Question 15

What are the different Session state management options available in ASP.NET?

Answer 15

In-Process
Out-of-Process.
In-Process stores the session in memory on the web server.

Out-of-Process Session state management stores data in an external server. The external server may be either a SQL Server or a State Server. All objects stored in session are required to be serializable for Out-of-Process state management.

Question 16

How you can add an event handler?

Answer 16

btnSubmit.Attributes.Add(“onMouseOver”,”JavascriptCode();”)

Question 17

What is caching?

Answer 17

Caching is a technique used to increase performance by keeping frequently accessed data or files in memory. The request for a cached file/data will be accessed from cache instead of actual location of that file.

Question 18

What are the different types of caching?

Answer 18

ASP.NET has 3 kinds of caching :

Output Caching,
Fragment Caching,
Data Caching.

Question 19

List the events in page life cycle.

Answer 19

1) Page_PreInit
2) Page_Init
3) Page_InitComplete
4) Page_PreLoad
5) Page_Load
6) Page_LoadComplete
7) Page_PreRender
8) Render