Your network contains an Active Directory forest named contoso.com and two Active Directory sites named Site1 and Site2.
You plan to deploy an Exchange Server 2010 Service Pack 1 (SP1) organization. An independent consultant recommends a design for the Exchange Server 2010 SP1 deployment as shown in the following table.
You need to recommend a change to the current Exchange Server 2010 SP1 design that will ensure that all users can access their mailbox if DC1 or DC2 fails.
Which change should you recommend?
A.
a database availability group (DAG)
B.
a DNS server on DC2
C.
a Hosts file on EX1, EX2, EX3, and EX4
D.
a single copy cluster (SCC)
E.
an activation preference for a database
F.
Datacenter Activation Coordination (DAC) mode
G.
delayed acknowledgments (ACKs)
H.
DNS round robin on DC1 and DC2
I.
EdgeSync synchronization
J.
Edge Transport server cloned configuration
K.
local continuous replication (LCR) on EX1, EX2, EX3, and EX4
L.
shadow redundancy