Your company has four offices that are connected by using high speed wide area network (WAN) links.
Each office has a router that supports the Simple Certificate Enrollment Protocol (SCEP).
The network consists of one Active Directory domain. All domain controllers run Windows Server 2008. You have a Certificate Services infrastructure.
The Certificate Services servers run Windows Server 2003 Standard Edition. You plan to enable device authentication for all routers.
You need to recommend changes to the Certificate Services infrastructure to support device authentication.
Which changes should you recommend?
A.
Install a new server that runs Windows Server 2008 Enterprise Edition. Enable the Active Directory Certificate Services (AD CS) role.
B.
Install a new server that runs Windows Server 2008 Standard Edition. Install the Network Protection and Access Services (NPAS) role.
C.
Upgrade the existing Certificate Services servers to Windows Server 2008 Standard Edition. Enable the Web enrollment component.
D.
Upgrade the existing Certificate Services servers to Windows Server 2008 Enterprise Edition. Enable the Network Device Enrollment service.