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 andyou have a significant user population in a site, you
canoptimize the speed and efficiency of domain logons and directory searches by adding a global catalog
server tothe site.
If you have a single-domain forest, global catalog servers are not required for logons, but directory searchesare
directed to the global catalog. In this case, you can enable the global catalog on all domain controllers forfaster
directory searches.
You can use the same user interface (UI) in the Active Directory Sites and Services snap-in to add or
removethe global catalog. Enabling the global catalog can cause additional replication traffic. However, global
catalogremoval 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 rootdomain,
or equivalent, is the minimum required to complete this procedure. To add or remove the global catalogOpen
Active Directory Sites and Services. To open ActiveDirectory 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 whichyouwant 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 theglobal
catalog.
Global catalog servers and sites
To optimize network performance in a multiple-site environment, consider adding global catalog serversin
sitesaccording to the needs in the sites for fast search responses and domain logons. It is recommended to
makeall domain controllers be global catalog seversif possible. In a single-site, multiple-domain environment,
asingle global catalog server is usually sufficientto cover common Active Directory queries and logons.