Which statement describes the three benefits of VLANs?

• A. Increased security, flexibility and scalability, and no geographical barrier.
• B. Decreased security and increased management complexity.
• C. Requires more hardware at each location.
• D. Lacks scalability and segmentation.

Answer: (A)

VLANs create logical groupings that break up a network into separate broadcast domains, which improves security by limiting who can see which traffic. They also offer flexibility by letting devices be grouped by function or department regardless of their physical location, so you can move users or resources without rewiring. They scale well because you can add devices to existing VLANs, create new ones, and extend them across multiple switches through trunk links, avoiding the need for new physical networks. Since VLANs can span different sites, there’s effectively no geographical barrier for that network segment, enabling centralized management and consistent policies. The other options describe outcomes that don’t fit how VLANs operate, such as reduced security or a need for more hardware or a lack of scalability.