Cisco 100-105 Exam

Which table displays the MAC addresses that are learned on a switch?

  • A. FIB
  • B. ARP
  • C. TCAM
  • D. CAM
Answer: Option D.
Explanation: 

The table is built by recording the source address and inbound port of all frames. As frames arrive on switch ports, the source MAC addresses are learned and recorded in the CAM table. The port of arrival and the VLAN are both recorded in the table, along with a timestamp. If a MAC address learned on one switch port has moved to a different port, the MAC address and timestamp are recorded for the most recent arrival port. Then, the previous entry is deleted. If a MAC address is found already present in the table for the correct arrival port, only its timestamp is updated.

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