You are the systems administrator of a large organization that has recently implemented
Windows Server 2008 R2.
You have a few remote sites that do not have very tight security.
You have decided to implement read-only domain controllers (RODC).
What forest functional levels does the network need for you to do the install? (Choose
Three)
A.
Windows 2000 Mixed
B.
Windows 2008 R2
C.
Windows 2003
D.
Windows 2008
Explanation:
http://technet.microsoft.com/en-us/library/cc731243%28v=ws.10%29.aspx
Prerequisites for Deploying an RODC
Ensure that the forest functional level is Windows Server 2003 or higher...
Deploy at least one writable domain controller running Windows Server 2008 or Windows
Server 2008 R2 in the same domain as the RODC and ensure that the writable domain
controller is also a DNS server that has registered a name server (NS) resource record for
the relevant DNS zone. An RODC must replicate domain updates from a writable domain
controller running Windows Server 2008 or Windows Server 2008 R2.