Which tool should you use?

Your network contains an Active Directory forest named contoso.com. The forest contains a
single domain and 10 domain controllers. All of the domain controllers run Windows Server
2008 R2 Service Pack 1 (SP1).
The forest contains an application directory partition named dc=app1,dc=contoso,dc=com. A
domain controller named DC1 has a copy of the application directory partition.
You need to configure a domain controller named DC2 to receive a copy of
dc=app1,dc=contoso,dc=com.
Which tool should you use?

A.
Dsamain

B.
Ntdsutil

C.
Active Directory Sites and Services

D.
Dcpromo

Explanation:
Active DirectorySites and Services is a Microsoft Management Console (MMC) snap-in that
you can use to administer the replication of directory data among all sites in an Active
Directory Domain Services (AD DS) forest.
You can use the Active Directory Sites and Services snap-in to manage the site-specific
objects that implement the intersite replication topology.