Your network contains an Active Directory domain named contoso.com.
Contoso.com contains a server named Server2.
You open the System properties on Server2 as shown in the exhibit. (Click the Exhibit
button.)
When you attempt to configure Server2 as an enterprise subordinate certification authority
(CA), you discover that the enterprise subordinate CA option is unavailable.
You need to configure Server2 as an enterprise subordinate CA.
What should you do first?
A.
Upgrade Server2 to Windows Server 2008 R2 Enterprise.
B.
Log in as an administrator and run Server Manager.
C.
Import the root CA certificate.
D.
Join Server2 to the domain.
Explanation:
http://social.technet.microsoft.com/Forums/nl-BE/winserversecurity/thread/1a1172c6-abdb-
4c5a-8a7cea254de5dada