You are the messaging engineer for your company. Your company has a main office and a branch office. The main office has 1,500 users. The branch office has 300 users.

Your network contains a single Active Directory domain. An Active Directory site exists for each office.

The companys only connection to the Internet is from the main offices perimeter network.

You need to recommend the Exchange Server 2007 server roles for each office to meet the following requirements:

Inspect inbound e-mail for viruses and spam in the perimeter network.

Ensure that users can send and receive e-mail even if a single mailbox server fails.

Ensure that all message delivery services and Exchange Web Services are available even if a single server fails.

Minimize the number of Exchange Server 2007 servers.

Which server roles should you recommend? (Each correct answer presents part of the solution. Choose three.)

A.
In each office, install an Edge Transport server.

B.
In the main offices perimeter network, install two load balanced Edge Transport servers.

C.
In each office, install an active clustered Mailbox server and a passive clustered Mailbox server.

D.
In each office, install two servers. On each server, install the Hub Transport server role and the Client
Access server role.

E.
In each office, install a server that hosts the Mailbox server role, the Client Access server role, and the Hub
Transport server role. Configure local continuous replication on each server.

F.
In the main offices perimeter network, install two servers: one server that hosts the Client Access server role
and another server that hosts the Hub Transport server role. In the branch office, install one server that hosts the
Client Access server role.

Explanation:
1. Inspect inbound email for viruses and spam in perimeter network. Requires B and eliminates A.

2. Ensure users can transmit mail even if single mailbox server fails. Requires C and eliminates E.

3. Ensure all message delivery and web services are available even if a single server fails. Requires D and eliminates E.

4. Minimize number of Exchange servers required.

Choice F eliminated since perimeter network must host only Edge servers.