You are a messaging professional. Your company uses a Microsoft Exchange

Server 2007 messaging system.

The company has five offices. The offices are connected by 128-KBps WAN links. A Microsoft Active

Directory site is configured for each office. The messaging system is centralized in the main office.

Mailbox servers, Hub Transport servers, and Client Access Servers are deployed on the internal network

in the main office. Edge Transport servers are deployed on a perimeter network in the main office.

The company plans to deploy Unified Messaging for users in all five offices. The company has the

following requirements:

The Play on Phone feature

The optimal performance of the Unified Messaging system

Each site has an IP-PBX system that is compatible with Unified Messaging.

You need to deploy the appropriate Exchange Server 2007 computers to fulfill the requirements.

Which two actions should you perform to deploy the appropriate Exchange Server 2007 computers to fulfill the requirements? (Each correct answer presents part of the solution. Choose two.)

A.
Deploy a Unified Messaging server in each site.

B.
Deploy a Unified Messaging Server role on servers in the central site that run the Client Access Server role.

C.
Deploy group policies that specify the use of IPSec to encrypt traffic from IP-PBX systems in each site to
the Unified Messaging server.

D.
Deploy the Mailbox server role, the Hub Transport server role and the Client Access Server role on a server
in each site. Place the corresponding mailbox accounts of users in that site on the local Mailbox server.