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.
From Active Directory Domains and Trusts, raise the functional level of the domain.

B.
At the command prompt, run adprep.exe /forestprep.

C.
From Active Directory Users and Computers, pre-stage the RODC computer account.

D.
At the command prompt, run adprep.exe /domainprep.

E.
At the command prompt, run adprep.exe /rodcprep.

Explanation:

C:
* During the first stage of the installation, the wizard records all the data about the RODC
that will be stored in the distributed Active Directory database, including the read-only
domain controller account name and the site in which it will be placed. This stage must be
performed by a member of the Domain Admins group.
* To create an RODC account by using the Windows interface
Click Start, click Administrative Tools, and then click Active Directory Users and Computers.
Double-click the domain container, then you can either right-click the Domain Controllers
container or click the Domain Controllers container, and then click Action.
Click Pre-create Read-only Domain Controller account