You need to recommend a remote access solution thatmeets the VPN requirements.
VPN Requirements
You plan to implement a third-party VPN server in each office. The VPN servers will be configured as RADIUS
clients. A server that runs Windows Server 2012 will perform RADIUS authentication for all of the VPN
connections.
Which role service should you include in the recommendation?

A.
Routing

B.
Network Policy Server

C.
DirectAccess and VPN (RAS)

D.
Host Credential Authorization Protocol

Explanation:
Updated: March 29, 2012
Applies To: Windows Server 2008 R2, Windows Server 2012 Network Policy Server
Network Policy Server (NPS) allows you to create and enforce organization-wide network access policiesfor
client health, connection request authentication, and connection request authorization. In addition, you can use
NPS as a Remote Authentication Dial-In User Service(RADIUS) proxy to forward connection requests to a
server running NPS or other RADIUS servers that youconfigure in remote RADIUS server groups.
NPS allows you to centrally configure and manage network access authentication, authorization, are client
health policies with the following three features:
RADIUS server. NPS performs centralized authorization, authorization, and accounting for wireless,
authenticating switch, remote access dial-up and virtual private network (VNP) connections. When you use
NPS as a RADIUS server, you configure network access servers, such as wireless access points and VPN
servers, as RADIUS clients in NPS. You also configure network policies that NPS uses to authorize connection
requests, and you can configure RADIUS accounting so that NPS logs accounting information to log fileson the
local hard disk or in a Microsoft SQL Server database. For more information, see RADIUS Server.
http://technet.microsoft.com/en-us/library/cc732912.aspx