In a network switch, which memory table determines the destination port for frames based on MAC addresses?

In a network switch, which memory table determines the destination port for frames based on MAC addresses?

• A. Administrative controls
• B. Preventative Controls
• C. CAM
• D. Flooding

Answer: (C)

The destination port for frames based on their MAC addresses is determined by the MAC address table, which is implemented in CAM (Content Addressable Memory). A switch learns which MAC addresses are reachable on which ports by examining the source MAC of incoming frames, updating the CAM with that MAC-to-port mapping. When a frame needs to be forwarded, the switch uses the destination MAC to look up the corresponding port in this table; if the entry is known, it forwards only to that port, and if not, the frame is flooded to all ports to learn the location. The other options refer to management or security concepts or to the action taken when there’s no known entry, not to the memory that stores the forwarding mappings.

The destination port for frames based on their MAC addresses is determined by the MAC address table, which is implemented in CAM (Content Addressable Memory). A switch learns which MAC addresses are reachable on which ports by examining the source MAC of incoming frames, updating the CAM with that MAC-to-port mapping. When a frame needs to be forwarded, the switch uses the destination MAC to look up the corresponding port in this table; if the entry is known, it forwards only to that port, and if not, the frame is flooded to all ports to learn the location. The other options refer to management or security concepts or to the action taken when there’s no known entry, not to the memory that stores the forwarding mappings.