Configuring key/value pairs on a RADIUS server is associated with deploying which of the following?

A.
WPA2-Enterprise wireless network

B.
DNS secondary zones

C.
Digital certificates

D.
Intrusion detection system

Explanation:
WPA2-Enterprise is designed for enterprise networks and requires a RADIUS authentication server.
Incorrect Answers:
B: A secondary zone is merely a copy of a primary zone that is hosted on another server.
C: Digital certificates are used for proving the identity of a user or the source of an object.
D: An intrusion detection system (IDS) is a device or software application that monitors network or
system activities for malicious activities or policy violations and produces reports to a management
station.

http://en.wikipedia.org/wiki/Wi-Fi_Protected_Access
https://technet.microsoft.com/en-us/library/cc771898.aspx
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, p. 61