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Your network contains a single Active Directory domain.
The domain contains five read-only domain controllers (RODCs) and five writable domain controllers.
All servers run Windows Server 2008.
You plan to install a new RODC that runs Windows Server 2008 R2.
You need to ensure that you can add the new RODC to the domain.
You want to achieve this goal by using the minimum amount of administrative effort.
Which two actions should you perform?
(Each correct answer presents part of the solution. Choose two.)
A. At the command prompt, run adprep.exe /rodcprep.
B. At the command prompt, run adprep.exe /forestprep.
C. At the command prompt, run adprep.exe /domainprep.
D. From Active Directory Domains and Trusts, raise the functional level of the domain.
E. From Active Directory Users and Computers, pre-stage the RODC computer account.
Correct Answer: BC
Explanation/Reference:
Because the domain has only Windows Server 2008 domain controllers, the current domain and forest functional levels are 2008 at most. Introducing a 2008 R2 domain controller requires adprep /forestprep and adprep /domainprep to be run. There’s no other way, it has to be done.
On top of that, the current domain already has five Windows Server 2008 RODCs. This means that adprep / rodcprep has already run and doesn’t need to be run again in this case.
Reference:
http://technet.microsoft.com/en-us/library/dd464018.aspx
What is Adprep.exe?
Adprep.exe is a command-line tool that is included on the installation disk of each version of Windows Server. Adprep.exe performs operations that must be completed in an existing Active Directory environment before you can add a domain controller that runs that version of Windows Server. You must run various Adprep.exe commands on your existing domain controllers to complete these operations in the following cases:
Before you add the first domain controller that runs a version of Windows Server that is later than the latest version that is running in your existing domain.
(…)
Running Adprep.exe
To complete the required operations, you must run the Adprep.exe commands that are listed in the following table. You must run adprep /forestprep before you run other commands.
adprep /forestprep
Must be run on the schema operations master for the forest.
Once for the entire forest
adprep /domainprep
Must be run on the infrastructure operations master for the domain.
Once in each domain where you plan to install an additional domain controller that runs a later version of Windows Server than the latest version that is running in the domain.
adprep /rodcprep
If you already ran this command for Windows Server 2008, you do not have to run it again for Windows Server 2008 R2.
