Which property is found on every control?

we can find the ID property in every control. The IDE sets this property and we need it to refer to the control from elsewhere on the page.

What is Ajax ?

AJAX is a technique that is used for shifting much of the processing off the server and to the user's browser, which dramatically increases the performance, both actual and perceived.

How do you use Ajax enabled controls on your site ?

To use ajax controls, we need to add a ScriptManager control to the page.

Which property of the ScriptManager control enables asynchronous postback?

The EnablePartialRendering property is the critical property of the ScriptManagercontrol, which is why it is set to True by default.

Which control can we use to enable asynchronous updates on the webpage?

We can use The UpdatePanel control to enables asynchronous updates.