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

Server 2007 messaging system.

Exchange Server 2007 computers do not contain public folder databases. All users run Microsoft Office

Outlook 2007 as their messaging client.

The company acquires a new company. The acquired company uses a Microsoft Exchange Server 2003

messaging system. The users in the acquired company run Microsoft Office Outlook 2003 as their

messaging client. Your company plans migration of the mailboxes from the Exchange Server 2003

messaging system to the Exchange Server 2007 messaging system.

You need to ensure that all the users from the acquired company can view the calendar availability

information of users in your companys Exchange Server 2007 messaging system when their mailboxes

are migrated to Exchange Server 2007.

What should you do to ensure that all the users from the acquired company can view the calendar availability

information?

A.
Upgrade from Office Outlook 2003 to Office Outlook 2007 on the client computers at the acquired
company. Migrate the user mailboxes from the Exchange Server 2003 computers to the Exchange Server 2007
computers.

B.
Deploy an Exchange Server 2007 Client Access Server and an Exchange Server 2007 Mailbox server on the
acquired companys network. Configure the Microsoft Exchange Server 2007 Availability service to share
availability in a cross-forest configuration. Migrate the user mailboxes from the Exchange Server 2003
computers to the Exchange Server 2007 computers.

C.
Configure the required Domain Name System (DNS) records for the Client Access Server that hosts the
Autodiscover service. Migrate the user mailboxes from the Exchange Server 2003 computers to the Exchange
Server 2007 computers.

D.
Implement directory synchronization between the two Exchange environments by using Microsoft Identity
Integration Server. Migrate the user mailboxes from the Exchange Server 2003 computers to the Exchange
Server 2007 computers.