Your network contains an Active Directory domain.
The domain contains two domain controllersnamed DC1and DC2.
You perform a full backup of the domain controllers every night by using Windows Server Backup.
You update a script in the SYSVOL folder.
You discover that the new script fails to run properly.
You need to restore the previous version of the script in the SYSVOL folder.
The solution must minimize the amount of time required to restore the script.
What should you do first?

A.
Run the Restore-ADObject cmdlet.

B.
Restore the system state to its original location.

C.
Restore the system state to an alternate location.

D.
Attach the VHD file created by Windows Server Backup.

Explanation:
http://technet.microsoft.com/en-us/magazine/2008.05.adbackup.aspx
Active Directory Backup and Restore in Windows Server 2008
NTBACKUP vs. Windows Server Backup
..
As an added bonus, Windows Server Backup stores itsbackup images in Microsoft® Virtual Hard Disk (VHD)
format. You can actually take a backup image and mount it as a volume in a virtual machine running under
Microsoft Virtual Server 2005. Youcan simply mount the VHDs in a virtual machine andbrowse for a
particular filerather than having to perform test restores of tapes to see which one has the file is on it. (A note
of caution: you can’t take a backup image and boot a virtual machine from it. Since the backed-up hardware
configuration doesn’t correspond to the virtual machine’s configuration, you can’t use Windows Server Backup
as a physical-to-virtual migration tool.)
…