Your network contains a server named Server1. Server1 has the Volume Activation Management
Tool (VAMT) installed. You need to activate Windows on a server named Server2 by using VAMT.
Which firewall rule should you enable on Server2?

A.
COM+ Network Access (DCOM-In)

B.
COM+ Remote Administration (DCOM-In)

C.
Remote Service Management (RPC)

D.
Windows Management Instrumentation (WMI-In)

Explanation:
Product key management with VAMT enables:
• Single local console to manage keys for Windows client, Windows Server and Office 2010
• Installation of the keys on remote managed systems through WMI
• Tracking remaining activations on MAKs3
Source: http://technet.microsoft.com/en-us/library/ff686876.aspx