Answer:
Network based firewall
Explanation:
A delimitarized zone or perimeter networks is a configuration used to create organisation site platform to unauthorised user. A copy of the companies local network is insecure, like a decor to analysed for beach in network to enhance security.
A firewall is a device used to prevent access to network by non members of a company.
When a DMZ is configured to the internet, a network based firewall ( next to the exit router) is configured to stop access to the company's main local network.