Final answer:
In Security Architecture, a demilitarized zone (DMZ) is a protected area within a network, separated by protective controls for increased security.
Step-by-step explanation:
In Security Architecture, demilitarized zones (DMZs) are a protected network or location separated from other security zones by protective controls. These are used to increase security by providing an additional layer whereby an external attacker does not have direct access to sensitive data and internal resources. The concept is akin to setting up many, small, protected areas in a network architecture which allows for controlled access between public networks, such as the internet, and private networks.