Your company has two main offices in Denver and Chicago and four branch offices in New York,
Miami .Seattle, and San Francisco. Each office is configured as an Active Directory site. Site links are
configured as shown in the exhibit. (Click the Exhibit button.)
The network consists of one Active Directory forest. All domain controllers run Windows Server
2003. Each main office has four domain controllers. Each branch office has one domain controller.
The Bridge all site links option is disabled. You need to prepare the environment to install a readonly domain controller (RODC) in each branch office. The solution must be achieved by upgrading
the minimum number of domain controllers. What should you do?
A.
Upgrade one domain controller in the Chicago office and one domain controller in the Denver
office to Windows Server 2008.
B.
Upgrade one domain controllers in the Chicago office to Windows Server 2008. Create a site link
that connects the Seattle and San Francisco office sites to the Chicago office site.
C.
Configure a site link to connect all branch office sites. Upgrade one domain controller in the
Denver office to Windows Server 2008.
D.
Configure a site link to connect the Chicago office site and the San Francisco and Seattle office
sites. Upgrade one domain controller in the Denver office to Windows Server 2008.
Explanation:
To install a read-only domain controller (RODC) in each branch office to ensure that only minimum
numbers of domain controllers are upgraded, you need to upgrade a single domain controller in
both the New York office and Seattle office to Windows Server 2008. This is because RODCs cannot
be a source domain controller for any other domain controller because they cannot perform
outbound replication. The placement of an RODC and writable domain controllers running Windows
Server 2008 might be affected by the site topology and network constraints.
Active Directory Replication Considerations
http://technet2.microsoft.com/windowsserver2008/en/library/e7caabff-3795-49fa-8338-
bbe56e49eae41033.mspx?mfr=true