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 Domains and Trusts

B.
Active Directory Users and Computers

C.
Active Directory Administrative Center

D.
Active Directory Sites and Services

Explanation:
If you have more than one domain in your forest and you have a significant user population in a site, you can
optimize the speed and efficiency of domain logons and directory searches by adding a global catalog server to
the site. If you have a single-domain forest, global catalog servers are not required for logons, but directory
searches are directed to the global catalog. In this case, you can enable the global catalog on all domain
controllers for faster directory searches. You can use the same user interface (UI) in the Active Directory Sites
and Services snap-in to add or remove the global catalog. Enabling the global catalog can cause additional
replication traffic. However, global catalog removal occurs gradually in the background and does not affect
replication or performance. Membership in the Enterprise Admins group in the forest or the Domain Admins
group in the forest root domain, or equivalent, is the minimum required to complete this procedure.
To add or remove the global catalog Open Active Directory Sites and Services.
To open Active Directory Sites and Services, click Start, click Administrative Tools, and then click Active
Directory Sites and Services.
To open Active Directory Sites and Services in Windows Server 2012, click Start , type dssite.msc. In the
console tree, click the server object to which you want to add the global catalog or from which you want to
remove the global catalog.
Where?
Active Directory Sites and Services\\Sites\\SiteName\\Servers In the details pane, right-click NTDS Settings of the
selected server object, and then click Properties. Select the Global Catalog check box to add the global catalog,
or clear the check box to remove the global catalog.
Global catalog servers and sites.
To optimize network performance in a multiple-site environment, consider adding global catalog servers in sites
according to the needs in the sites for fast search responses and domain logons. It is recommended to make
all domain controllers be global catalog severs if possible. In a single-site, multiple-domain environment, a
single global catalog server is usually sufficient to cover common Active Directory queries and logons.