What does VLAN stand for in networking?

VLAN stands for Virtual Local Area Network. This term is fundamental in networking as it refers to a logical subgroup within a local area network that can combine devices from various physical LANs. VLANs enhance network efficiency and security by isolating broadcast domains without requiring multiple physical networks. They allow network administrators to create distinct networks that can still share the same physical infrastructure.

The correct answer highlights that VLANs function virtually, meaning they do not rely on the physical layout of the network. Instead, devices can be grouped according to organizational needs or function, regardless of their physical connection point. This flexibility is crucial in managing different user groups, services, or traffic types within the same network infrastructure, helping to reduce congestion and improve overall performance.

The other options provided do not accurately represent the concept of VLANs in networking, making them less relevant. For example, "Virtual Layered Access Network" and "Visual Local Area Network" do not describe the technical framework and function of VLANs, while "Variable Local Area Network" implies a changeability that does not align with the defined purpose of a VLAN.