AJAX.NET Interview questions

Total available count: 15
Subject - Microsoft Technologies
Subsubject - AJAX.NET

What is the difference between synchronous postback and asynchronous postback?

Synchronous postback:
1. It renders the entire page for any postback from the web server
2. It executes all the actions at once because page requests at a time to web server
3. It modifies the entire page, same as the general postback
Asynchronous postback:
1. It renders only the required part of the page from the web server
2. It executes only one postback at a time
3. It only modifies the update panel that raises the postback

Next 5 interview question(s)

What are the new features of ASP.NET AJAX 4.0?
Explain the UpdatePanel control?
Explain about the Timer control in AJAX.NET?
What is the purpose of the ScriptManagerProxy control?
Is it possible to use multiple ScriptManager controls on a Web page?