Which of the following best describes VLANs?

The statement that VLANs help divide networks regardless of physical location is accurate because Virtual Local Area Networks (VLANs) allow network administrators to segment a broader network into smaller, logical networks. This capability means that devices can be grouped together into the same VLAN based on functional requirements, security levels, or departmental needs, even if those devices are on different physical locations or connected through different switches.

VLANs enhance network performance and security by isolating traffic, which reduces congestion and enhances data integrity within a segment. Because they operate at the data link layer (Layer 2) of the OSI model, VLANs can include any device that is part of the same logical broadcast domain, independent of its geographic location. This flexibility is critical in managing large networks efficiently.

Other choices do not accurately reflect the function and benefits of VLANs. For instance, stating that they enhance only physical security overlooks their role in managing logical network segmentation. Additionally, the assertion that VLANs connect devices based solely on physical location contradicts their primary function, which includes the ability to connect devices that are physically apart. Finally, the idea that VLANs are used only for performance management does not capture their broader application in improving security and administrative control over network configurations.