What are security zones in a network?

Security zones in a network refer to segmented areas that have different security controls and policies based on the sensitivity of the data they handle and the level of trust assigned to them. This concept is essential in network architecture because it allows for better management of security measures tailored to specific threats and risks.

For example, a Demilitarized Zone (DMZ) is a common type of security zone that acts as a buffer between an internal network and external networks such as the internet. The DMZ is designed to host services that need to be accessible from the outside, like web servers or email servers, while providing a layer of protection to the internal network.

This zoning approach facilitates controlled access and can help in containing potential security breaches within a specific zone, thereby minimizing risk across the entire network. By having segmented areas with differing security measures, organizations can effectively implement strategies that align with their risk management needs and operational requirements.

The other options do not accurately capture the concept of security zones. Physical servers alone do not encompass the network's overall security strategy. Unprotected areas of a network do not align with the idea of deliberately established segments based on security measures. Lastly, homogeneous traffic zones suggest uniformity in traffic which contradicts the very essence of security zoning where