Your network consists of one Active Directory domain. All servers run Windows Server 2008. You need to plan access restriction policies for the network.

The plan must support the following restrictions:
– Only computers that run Windows Vista must be able to access the network.
– Only computers that have Windows Firewall enabled must be able to access the network.

What should you include in your plan?

A.
Implement Authorization Manager.

B.
Implement Network Access Protection (NAP) on a single server in the domain.

C.
Create a Group Policy object (GPO) linked to the domain. Enable the Windows Firewall settings in the GPO.

D.
Create a Group Policy object (GPO) linked to the Domain Controllers organizational unit (OU). Enable the Windows Firewall settings in the GPO.