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 newwritable 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 firstwe
create the installation media, thenwe 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.exetool 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 UsingIFM
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 timethat is necessary to install the
additional domain controller.