What term describes the logical segmentation of a switch into separate broadcast domains?

What term describes the logical segmentation of a switch into separate broadcast domains?

• A. Subnet
• B. Broadcast Domain
• C. VLAN
• D. Collision Domain

Answer: (C)

VLAN stands for Virtual Local Area Network, and it creates separate broadcast domains on a switch by grouping ports into logical networks. When devices are placed in the same VLAN, they share broadcasts and can communicate directly at Layer 2, but broadcasts from one VLAN never reach devices in another VLAN. This separation is done without changing physical connections, using VLAN tagging (like 802.1Q) on trunk links and placing each switch port into a specific VLAN. To have devices in different VLANs talk to each other, inter-VLAN routing (via a router or a Layer 3 switch) is required. This is distinct from IP subnets (which are network-layer boundaries) and from the broader notion of a broadcast domain or a collision domain, which VLANs define and isolate at Layer 2 within a single physical switch.

VLAN stands for Virtual Local Area Network, and it creates separate broadcast domains on a switch by grouping ports into logical networks. When devices are placed in the same VLAN, they share broadcasts and can communicate directly at Layer 2, but broadcasts from one VLAN never reach devices in another VLAN. This separation is done without changing physical connections, using VLAN tagging (like 802.1Q) on trunk links and placing each switch port into a specific VLAN. To have devices in different VLANs talk to each other, inter-VLAN routing (via a router or a Layer 3 switch) is required. This is distinct from IP subnets (which are network-layer boundaries) and from the broader notion of a broadcast domain or a collision domain, which VLANs define and isolate at Layer 2 within a single physical switch.