Which two statements about the anti-defacement feature on FortiWeb are true? (Choose two.)

Which two statements about the anti-defacement feature on FortiWeb are true? (Choose two.)
A . Anti-defacement can redirect users to a backup web server, if it detects a change.
B. Anti-defacement downloads a copy of your website to RAM, in order to restore a clean image, if it detects defacement.
C. FortiWeb will only check to see if there are changes on the web server; it will not download the whole file each time.
D. Anti-defacement does not make a backup copy of your databases.

Answer: C, D

Explanation:

Anti-defacement backs up web pages only, not databases.

If it detects any file changes, the FortiWeb appliance will download a new backup revision.

Reference: https://help.fortinet.com/fweb/551/Content/FortiWeb/fortiweb-admin/anti_defacement.htm