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Your network consists of one Active Directory domain. The network contains one Active Directory site. All domain controllers run Windows Server 2008.
You create a second Active Directory site and plan to install a domain controller that runs Windows Server 2008 in the new site.
You also plan to deploy a new firewall to connect the two sites.
You need to enable the domain controllers to replicate between the two sites.
Which traffic should you permit through the firewall?
A. LDAP
B. NetBIOS
C. RPC
D. SMTP
Correct Answer: C
Explanation/Reference:
Explanation:
You should permit RPC traffic through the firewall to enable the domain controllers to replicate between the two sites because the Active Directory relies on remote procedure call (RPC) for replication between domain controllers. You can open the firewall wide to permit RPC’s native dynamic behavior.
Reference: Active Directory Replication over Firewalls
http://technet.microsoft.com/en-us/library/bb727063.aspx