Which of the following statements about AJAX are true? (choose all that are true) 1) AJAX response data must not be HTML

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Which of the following statements about AJAX are true?
(choose all that are true)
1) AJAX response data must not be HTML
2) Your server needs to be specially configured for AJAX
3) AJAX requests require special AJAX-only routes on our
server
4) AJAX allows us to send HTTP requests using JavaScript
5) The server cannot generally distinguish AJAX HTTP requests
from non AJAX HTTP requests
6) AJAX requests are synchronous
7) AJAX requests are not normal HTTP requests
8) AJAX requires a user to have Cookies enables
9) Server routes for AJAX requests are no different than other
routes
10) AJAX response data can be any format
11) AJAX allows us to load page content in the background