Which Devices Utilize VLANs for Network Security?

A.

The device that can utilize VLANs (Virtual Local Area Networks) to secure networks is a Switch.

A switch is a network device that connects multiple devices, such as computers, servers, printers, and other switches, to form a network. It operates at the Data Link layer (Layer 2) of the OSI (Open Systems Interconnection) model, and its primary function is to forward data packets between devices within a network.

VLANs are a method of dividing a physical network into multiple logical networks, which enables network administrators to improve security and network management. VLANs operate at the Data Link layer (Layer 2) of the OSI model, and they use network switches to logically separate devices into different broadcast domains.

By using VLANs, network administrators can restrict network access to specific devices or groups of devices, and prevent unauthorized access to sensitive data. VLANs can also be used to improve network performance by separating traffic flows and reducing network congestion.

In summary, a switch is the device that can utilize VLANs to secure networks by separating traffic flows and restricting access to specific devices or groups of devices. Hubs, repeaters, and bridges are network devices that operate at the physical layer (Layer 1) or Data Link layer (Layer 2), but they do not support VLANs.