You are a messaging professional. Your company has a Microsoft Exchange 2000 Server organization. The companys corporate network consists of a main office and two branch offices, Branch Office 1 and Branch Office 2. The company uses a Microsoft Windows 2000 native-mode Active Directory forest.

The infrastructure setup at each office includes an Active Directory site, Exchange 2000 Server computers, and domain controllers.

The domain controllers at the main office and Branch Office 1 run Windows 2000 Advanced Server Service Pack 2 and are also global catalog servers.

The domain controllers at Branch Office 2 run Windows 2000 Advanced Server Service Pack 2 but are not global catalog servers.

The company plans to upgrade to a Microsoft Exchange Server 2007 organization. The company also plans to install Exchange Server 2007 computers at all the offices.

You need to prepare the infrastructure for the deployment of Exchange Server 2007.

Which two actions should you perform to prepare the infrastructure for the deployment of Exchange Server 2007.? (Each correct answer presents part of the solution. Choose two.)

A.
Raise the forest functional level to Microsoft Windows Server 2003.

B.
Upgrade all domain controllers to Microsoft Windows Server 2003 Service Pack 1.

C.
Upgrade the schema master computer to Microsoft Windows Server 2003 Release 2.

D.
Configure the Branch Office 2 domain controller as a global catalog server.

E.
Upgrade the branch office domain controllers to Windows 2000 Advanced Server Service Pack 4.