A company has an on-premise Exchange Server 2010 SP1 environment and an Active Directory
Domain Services (AD DS) domain. Client computers run Microsoft Office Outlook 2003. The company
plans to migrate mailboxes to a cloud-based Exchange Server 2010 SP1 service. You need to
recommend a solution for ensuring that the global address list (GAL) in the on-premise and cloudbased environments are identical. What should you recommend?

A.
Synchronize the AD DS directory from the cloud-based environment.

B.
Install and configure the Exchange Online Connector for Office Outlook 2003 in the on-premise
environment.

C.
Install and configure an SMTP connector in the cloud-based environment.

D.
Synchronize the AD DS directory from the on-premise environment.