Which device forwards frames only to the destination port rather than broadcasting to all ports?

• A. Hub
• B. Switch
• C. Router
• D. Bridge

Answer: (B)

Forwarding frames only to the destination port, rather than broadcasting to all ports, relies on a device that learns where devices live on the LAN and uses a MAC address table to forward accordingly. A hub simply repeats every signal to all connected ports, so every frame is broadcast. A switch learns which MAC addresses are on which ports, builds a forwarding table, and sends each frame only to the port that leads to the destination (flooding only when the destination isn’t yet known). A router operates at the network layer, routing packets based on IP addresses between networks rather than forwarding individual frames within a single LAN. A bridge also forwards based on MAC addresses, but modern networks primarily recognize switches as the devices that perform this per-destination forwarding most efficiently. That makes the switch the best answer.