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Monday, 21 September 2015

50 Top AJAX Interview questions and Answers

1. What is Ajax?
Ajax is abbreviated as Asynchronous Javascript and XML. It is new technique used to create better, faster and more interactive web systems or applications. Ajax uses asynchronous data transfer between the Browser and the web server.
This technique is used to make internet faster and user friendly. It is not a programming language.

2. What are Ajax applications?
Browser based applications and platform independent applications are used by Ajax.

3. How many types of triggers are present in update panel?
There are two types of triggers used in update panel:
PostBackTrigger – This works as full postback and it cannot work asynchronously
AsyncPostBackTrigger – Partial post back asynchronously

4. What are all the controls of Ajax?
Following are the controls of Ajax:
   ScriptManager
   ScriptManagerProxy
   UpdatePanel
   UpdateProgress
   Timer

5. What is the name of the DLL that contains Ajax control tool kit?
Ajaxcontroltoolkit.dll is the DLL used for Ajax control tool kit and it can be downloaded from the internet. It can be added in the tool box or copied directly in the bin folder.


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