You need to ensure that NAP meets the technical requirements.
Which role services should you install?
A. Network Policy Server, Health Registration Authority and Host Credential Authorization
Protocol
B. Health Registration Authority, Host Credential Authorization Protocol and Online Responder
C. Certification Authority, Network Policy Server and Health Registration Authority
D. Online Responder, Certification Authority and Network Policy Server
Answer: C
Explanation:
* Scenario:
Implement Network Access Protection (NAP).
Ensure that NAP with IPSec enforcement can be configured.
* Health Registration Authority
Applies To: Windows Server 2008 R2, Windows Server 2012
Health Registration Authority (HRA) is a component of a Network Access Protection (NAP) infrastructure that plays a central role in NAP Internet Protocol security (IPsec) enforcement.
HRA obtains health certificates on behalf of NAP clients when they are compliant with network health requirements. These health certificates authenticate NAP clients for IPsec-protected communications with other NAP clients on an intranet. If a NAP client does not have a health certificate, the IPsec peer authentication fails and the NAP client cannot initiate communication with other IPsec-protected computers on the network.
HRA is installed on a computer that is also running Network Policy Server (NPS) and Internet
Information Services (IIS). If they are not already installed, these services will be added when you install HRA.
Reference: Health Registration Authority