Which control you need to place on the page to show loading image?
Does ajax have significant accessibility or browser compatibility limitations? Do ajax applications break the back button? Is ajax compatible with rest? Are there security considerations with ajax development? Can ajax applications be made to work for users who have javascript turned off?
When do I use a synchronous versus asynchronous request?
What are all the technologies used by Ajax?
Describe how to handle concurrent ajax requests?
What are the tools for debugging ajax applications?
What are the differences between ajax and javascript? : asp.net ajax
Describe the process and benefits of using the always visible control extender?
What is the difference between AJAX using .net over AJAX using Java?
What are the extender controls?
How does one call a javascript function from the ajax code?
How ajax is different?
Does ajax work with java?