Your network contains an Active Directory forest that contains two domains. The forest contains five
domain controllers.
The domain controllers are configured as shown in the following table.

You need to configure DC5 as a global catalog server.
Which tool should you use?

A.
Active Directory Administrative Center

B.
Active Directory Users and Computers

C.
Active Directory Sites and Services

D.
Active Directory Domains and Trusts

Explanation:
Active Directory Sites and Services can be used to Add or remove the global catalog read-only directory
partitions from a domain controller in the site. Confirm that all read-only directory partitions have been
replicated to the new global catalog server. As well as verify that the global catalog server is being
advertised in Domain Name System (DNS).
References:
http://technet.microsoft.com/en-us/library/cc730868.aspx
http://technet.microsoft.com/en-us/library/cc770674.aspx