In networking, what does VLAN stand for?

The term VLAN stands for Virtual Local Area Network. A VLAN is a subnetwork that can group together collections of devices from different physical LANs. This allows for greater flexibility and efficiency in managing the network by segregating traffic for security or performance reasons without requiring physical separation.

By using VLANs, network administrators can create separate logical networks, even on the same physical infrastructure, enabling different departments or functions within an organization to communicate as if they are on separate networks. This organization enhances security, reduces broadcast traffic, and can simplify troubleshooting.

The other options do not represent recognized concepts in networking. 'Variable Local Area Network' and 'Virtual Long Area Network' do not relate to standard networking terminology, while 'Virtual Lightweight Area Network' does not describe the actual function or purpose of VLANs. Understanding VLANs and their role in modern networking is crucial for managing efficient and secure networks.