CompTIA Security+ Question J-32

Which of the following network architecture concepts is used to securely isolate at the boundary between networks?

A. VLAN
B. Subnetting
C. DMZ
D. NAT

Answer: C

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.