Your role of Network Administrator at ABC.com includes the management of the Active Directory
Domain Services (AD DS) domain named ABC.com. The network includes servers that run
Windows Server 2012. All client computers run Windows 7 Professional.
The network includes a server named ABC-NPS1. ABC-NPS1 is configured as a Network Policy
Server (NPS) and a Health Registration Authority (HRA). A server named ABC-CA1 runs
Certificate Services and is configured as an Enterprise Certification Authority (CA) for the
ABC.com domain. The CA has been associated with the HRA on ABC-NPS1.
The HRA has been configured with an SSL certificate and the appropriate DNS Service Locator
(SRV) records have been configured.
You want to configure HRA automatic discovery on the client computers. You configure a Group
Policy Object (GPO) to clear all trusted group configurations from the client computers.
What should you do next?

A.
You should configure the EnableDiscovery registry key on ABC-CA1.

B.
You should configure the EnableDiscovery registry key on ABC-NPS1.

C.
You should configure the EnableDiscovery registry key on the client computers..

D.
You should configure the EnableDiscovery registry key on a domain controller.

Explanation: