Your network contains an Active Directory domain named contoso.com. Contoso.com
contains a writable domain controller named DC1 and a read-only domain controller (RODC)
named DC2. All domain controllers run Windows Server 2008 R2.
You need to install a new writable domain controller named DC3 in a remote site. The
solution must minimize the amount of replication traffic that occurs during the installation of
Active Directory Domain Services (AD DS) on DC3.
What should you do first?
A.
Run dcpromo.exe /createdcaccount on DC3.
B.
Run ntdsutil.exe on DC2.
C.
Run dcpromo.exe /adv on DC3.
D.
Run ntdsutil.exe on DC1.
Explanation:
We can run dcpromo.exe /adv on DC3 to install a new writable domain controller using the
Install From Media (IFM) option. That way there is less replication traffic. But before we can
do that we have to create the installation media first. I suspect that’s what they mean when
they say “What should you do first?” So first we create the installation media, then we use
the installation media to install DC3.
Technet gives us instructions on how to create the installation media. It says:
“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.”
“You must use writeable domain controller installation media to install a writeable domain
controller. You can create writeable domain controller installation media only on a writeable
domain controller.”
Since DC2 in answer B is a read-only domain controller, that leaves us with answer D (“Run
ntdsutil.exe on DC1″).
Reference 1)
http://technet.microsoft.com/en-us/library/cc770654.aspx
[Used for the information above]
[Some extra info on using IFM to install the DC:]
Reference 2)
http://http://technet.microsoft.com/en-us/library/cc732887.aspx
dcpromo /adv
Performs an install from media (IFM) operation.
Reference 3)
http://http://technet.microsoft.com/en-us/library/cc816722.aspx
Installing an Additional Domain Controller by Using IFM
When you install Active Directory Domain Services (AD DS) by using the install from media
(IFM) method, you can reduce the replication traffic that is initiated during the installation of
an additional domain controller in an Active Directory domain. Reducing the replication traffic
reduces the time that is necessary to install the additional domain controller.