Your network contains an Active Directory domain. The domain contains two domain controllers  named DC1 and 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（）

单项选择题Your network contains an Active Directory domain. The domain contains two Active Directory  sites named Site1 and Site2. Site1 contains two domain controllers named DC1 and DC2. Site2  contains two domain controller named DC3 and DC4.   The functional level of the domain is Windows Server 2008 R2. The functional level of the forest  is Windows Server 2003.     Active Directory replication between Site1 and Site2 occurs from 20：00 to 01：00 every day. At  07：00， an administrator deletes a user account while he is logged on to DC1. You need to restore  the deleted user account. You want to achieve this goal by using the minimum amount of  administrative effort.     What should you do（）

A.On DC1， run the Restore-ADObject cmdlet.
B.On DC3， run the Restore-ADObject cmdlet.
C.On DC1， stop Active Directory Domain Services， restore the System State， and then start Active Directory Domain
D.On DC3， stop Active Directory Domain Services， perform an authoritative restore， and then start Active Directory Do

单项选择题Your network contains an Active Directory domain. The domain contains several domain  controllers.   All domain controllers run Windows Server 2008 R2.   You need to restore the Default Domain Controllers Policy Group Policy object （GPO） to the  Windows Server 2008 R2 default settings.     What should you do（）

A.Run dcgpofix.exe /target：dc.
B.Run dcgpofix.exe /target：domain.
C.Delete the link for the Default Domain Controllers Policy， and then run gpupdate.exe /sync.  
D.Delete the link for the Default Domain Controllers Policy， and then run gpupdate.exe /force.

单项选择题Your network contains a single Active Directory domain. The functional level of the forest is  Windows Server 2008. The functional level of the domain is Windows Server 2008 R2. All DNS servers run Windows Server 2008. All domain controllers run Windows Server 2008 R2. You need to ensure that you can enable the Active Directory Recycle Bin. What should you do（）

A.Change the functional level of the forest.
B.Change the functional level of the domain.
C.Modify the Active Directory schema.
D.Modify the Universal Group Membership Caching settings.

多项选择题Your network contains a single Active Directory domain. A domain controller named DC2 fails.     You need to remove DC2 from Active Directory.     Which two actions should you perform（）

A.At the command prompt， run dcdiag.exe /fix.
B.At the command prompt， run netdom.exe remove dc2.
C.From Active Directory Sites and Services， delete DC2.
D.From Active Directory Users and Computers， delete DC2.

单项选择题Your network contains a single Active Directory domain.     You need to create an Active Directory Domain Services snapshot.     What should you do（）

A.Use the Ldp tool.
B.Use the NTDSUtil tool.
C.Use the Wbadmin tool.
D.From Windows Server Backup， perform a full backup.