Which of the following concepts is described as multiple logical subnets traversing the same physical network?

DHCP is an application-layer protocol that dynamically assigns IP addresses to hosts and has no role in creating or segmenting logical networks.

A VLAN (Virtual Local Area Network) uses IEEE 802.1Q tagging to logically separate broadcast domains on shared physical switches and cabling. Devices on different VLANs are isolated from each other at Layer 2 despite sharing the same physical network, which is precisely the concept of multiple logical subnets traversing one physical network.

A DMZ is a network architecture zone that isolates publicly accessible services from the internal trusted network - it is a security boundary, not a mechanism for running multiple subnets on shared physical infrastructure.

VPNs create encrypted tunnels across public or private networks to securely extend connectivity to remote users or sites, which is a different concept from logical subnet segmentation on local physical infrastructure.