Western Governors University (WGU) ITEC2801 D415 Software Defined Networking Practice Exam

A perimeter network is often referred to as a demilitarized zone (DMZ) because it serves as a buffer zone between an internal network and the external internet. The purpose of a DMZ is to add an additional layer of security to an organization’s local area network (LAN) by segmenting resources that may be accessible from the internet but should not have direct access to the internal network. In this configuration, servers that are exposed to the internet, such as web servers and mail servers, are placed in the DMZ. This way, even if these servers are compromised, the internal network remains secure as the threat is isolated in the DMZ.

Establishing a perimeter in networking terminology emphasizes protecting sensitive internal systems while allowing necessary access to external resources. This approach reduces risks associated with direct exposure of the entire internal network to the internet and reinforces overall security measures.