Which of the following BEST describes a demilitarized zone?

A.
A buffer zone between protected and unprotected networks.

B.
A network where all servers exist and are monitored.

C.
A sterile, isolated network segment with access lists.

D.
A private network that is protected by a firewall and a VLAN.

Explanation:
A demilitarized zone (DMZ) is an area of a network that is designed specifically for public users to access.
The DMZ is a buffer network between the public untrusted Internet and the private trusted LAN. Often a
DMZ is deployed through the use of a multihomed firewall.
Incorrect Answers:
B: The location and monitoring of servers would not occur in a DMZ as it is exposed to the public.
C: This describes a VLAN.D: This describes a VPN.

Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, p. 39
http://en.wikipedia.org/wiki/Virtual_private_network