Your Active Directory forest consists of the domain controllers shown in the table.
Site1 and Site2 are connected by an unreliable WAN link.
You have two Exchange Server 2003 servers at each site. You plan to remove Server3 from the network.
You need to ensure that messaging services at both sites are available if the WAN link fails, after Server3 is removed from the network. The solution must minimize replication traffic between the sites.
What should you do first?
A.
Configure server2 as a global catalog server.
B.
Configure Server4 as a global catalog server.
C.
Enable universal group membership caching on site1.
D.
Enable universal group membership caching on site2.