Your network consists of one Active Directory domain. All domain controllers run Windows Server
2003. The functional level of the forest is Windows 2000. The functional level of the domain is
Windows 2000 mixed. You install a domain controller that runs Windows Server 2008. You plan to
deploy a read-only domain controller (RODC). You need to modify the domain and forest functional
levels to support the installation of the RODC. What should you do?

A.
Set the domain functional level to Windows 2003 and the forest functional level to Windows 2000
native.

B.
Set the domain functional level to Windows 2003 and the forest functional level to Windows
2003.

C.
Set the domain functional level to Windows 2008 and the forest functional level to Windows
2003.

D.
Set the domain functional level to Windows 2008 and the forest functional level to Windows
2008.

Explanation:

To deploy a read-only domain controller (RODC) where all domain controllers the domain run
Windows Server 2003 and the functional level of the forest is Windows 2000 and the functional level
of the domain is Windows 2000 and Windows 2003 mixed, you need to set the domain functional
level to Windows 2003 set forest functional level to Windows 2003. You need to create both the
forest and domain functional levels of Windows Server 2003 because only when you use both the
forest and domain functional levels of Windows Server 2003, you will be able to support Read-only
domain controllers (RODC) and Windows Server 2003 domain controllers.
Appendix of Functional Level Features
http://technet2.microsoft.com/windowsserver2008/en/library/34678199-98f1-465f-9156-
c600f723b31f1033.mspx?mfr=true