You are a messaging professional. Your company uses a Microsoft Exchange Server 2007 messaging system. The messaging system consists of four Exchange Server 2007 servers as shown in the following table.

Server nameServer role installed
Server1Hub Transport
Server2Client Access
Server3Mailbox
Server4Mailbox

Each Mailbox server hosts 2,000 user mailboxes.

The motherboard on one of the Mailbox servers has failed. Users report that they cannot access their
mailboxes.

You need to ensure that the messaging system is fault tolerant. You also need to ensure that users have
access to their e-mail messages even if a single server fails.

What are two possible ways to achieve this goal? (Each correct answer presents a complete solution.
Choose two.)

A.
Configure Local Continuous Replication (LCR) on the Mailbox servers.

B.
Configure Cluster Continuous Replication (CCR) on the Mailbox servers.

C.
Configure Microsoft Exchange ActiveSync on the Mailbox servers.

D.
Configure Volume Shadow Copy on the Mailbox servers. Back up the mailbox stores.

E.
Configure single copy cluster (SCC) on the Mailbox servers.