HOTSPOT
Your network contains an Active Directory forest named contoso.com. The forest contains
two sites named Seattle and Montreal. The Seattle site contains two domain controllers. The
domain controllers are configured as shown in the following table.

The Montreal site contains a domain controller named DC3. DC3 is the only global catalog
server in the forest.
You need to configure DC2 as a global catalog server.
Which object’s properties should you modify? To answer, select the appropriate object in the
answer area.

Answer: See the explanation

Explanation:
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http://technet.microsoft.com/en-us/library/cc794934.aspx
To designate a domain controller to be a global catalog server
1. Click Start, point to Administrative Tools, and then click Active Directory Sites and
Services.
2. In the console tree, expand the Sites container, and then expand the site in which you are
designating a global catalog server.

3. Expand the Servers container, and then expand the Server object for the domain
controller that you want to designate as a global catalog server.
4. Right-click the NTDS Settings object for the target server, and then click Properties.
5. Select the Global Catalog check box, and then click OK.