Your network contains a single Active Directory domain. The functional level of the forest is Windows Server
2008 R2.
You need to enable the Active Directory Recycle Bin.
What should you use?

A.
the Dsmod tool

B.
the Enable-ADOptionalFeature cmdlet

C.
the Ntdsutil tool

D.
the Set-ADDomainMode cmdlet

Explanation:
Similar question to question L/Q5.
Reference:
http://technet.microsoft.com/en-us/library/dd379481.aspx
Enabling Active Directory Recycle Bin
After the forest functional level of your environment is set to Windows Server 2008 R2, you can enableActive
Directory Recycle Bin by using the following methods:
Enable-ADOptionalFeature Active Directory module cmdlet(This is the recommended method.)
Ldp.exe