ABC.comhas an Active Directory foreston a single domain.
The domain operates Windows Server 2008.
A new administrator accidentally deletes the entire organizational unitin the Active Directory database
that hosts 6000 objects.
You have backed up the system state datausing third-party backupsoftware.
To restore backup, you start the domain controllerin the Directory Services Restore Mode (DSRM).
You need to perform an authoritative restore of the organizational unit and restore the domain
controller to its original state.
Which three actionsshould you perform?
Answer: 
Explanation:
References:
Performing Authoritative Restore of Active Directory Objects
http://technet.microsoft.com/en-us/library/cc816878.aspx
Restart the Domain Controller in Directory ServicesRestore Mode Locally
http://technet.microsoft.com/en-us/library/cc816897.aspx
Restore AD DS from Backup (Nonauthoritative Restore)
http://technet.microsoft.com/en-us/library/cc794755.aspx
Mark an Object or Objects as Authoritative
http://technet.microsoft.com/en-us/library/cc816813.aspx
Restart the Domain Controller in Directory ServicesRestore Mode Locally
If you have physical access to a domain controller,you can restart the domain controller in DirectoryServices
Restore Mode (DSRM) locally. Restarting in DSRM takes the domain controller offline. In this mode, theserver
is functioning as a member server, not as a domain controller.
During installation of Active Directory Domain Services (AD DS), you set the Administrator password for logging
on to the server in DSRM. When you start Windows Server 2008 in DSRM, you must log on by using this
DSRM password for the local Administrator account.
Restore AD DS from Backup (Nonauthoritative Restore)
Nonauthoritative restore from backup restores Active Directory Domain Services (AD DS) from its current state
to the previous state of a backup. Use this procedure before you perform an authoritative restore procedure to
recover objects that were deleted after the time ofthe backup. To restore AD DS from backup, use a system
stateor critical-volumes backup.
Mark an Object or Objects as Authoritative
In this procedure, you use the ntdsutilcommand to select objects that are to be marked authoritative when
they replicate to other domain controllers.
Restart the domain controller
[Don’t restart the domain controller in Safe Mode, you would have a ‘crippled’ server without AD DS.]