Your network contains one Active Directory domain named contoso.com. The domain contains 10
domain controllers and a read-only domain controller (RODC) named RODC01.
You need to add an RODC to the domain by using the Install From Media (IFM) option.
Which tool should you use to create the media?

A.
the ntdsutil command

B.
the Set-ADDomain cmdlet

C.
the Install-ADDSDomain cmdlet

D.
the dsadd command

E.
the dsamain command

F.
the dsmgmt command

G.
the net user command

H.
the Set-ADForest cmdlet

Explanation:
You can use the Ntdsutil.exe tool to create installation media for additional domain controllers that
you are creating in a domain. By using the Install from Media (IFM) option, you can minimize the
replication of directory data over the network. This helps you install additional domain controllers in
remote sites more efficiently.
Installing AD DS from Media
https://technet.microsoft.com/en-us/library/cc770654(v=ws.10).aspx