Cisco 100-105 Exam

The MAC address table is shown in its entirety. The Ethernet frame that is shown arrives at the switch. What two operations will the switch perform when it receives this frame? (Choose two.)

The MAC address table is shown in its entirety. The Ethernet frame that is shown arrives at the switch. What two operations will the switch perform when it receives this frame? (Choose two.)

  • A. The switch will not forward a frame with this destination MAC address.
  • B. The frame will be forwarded out of all the ports on the switch.
  • C. The MAC address of ffff.ffff.ffff will be added to the MAC address table.
  • D. The frame will be forwarded out of all the active switch ports except for port fa0/0.
  • E. The MAC address of 0000.00aa.aaaa will be added to the MAC Address Table.
  • F. The frame will be forwarded out of fa0/0 and fa0/1 only.
Answer: Option D. E.
Explanation: 

If the switch already has the MAC address in its table for the destination, it will forward the frame directly to the destination port. If it was not already in its MAC table, then the source MAC is added to the MAC address table and frame would have been flooded out all ports except for the port that it came from.

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