200-301: Cisco Certified Network AssociateDemo

By Cisco · Question Mode

QuestionQ1250

Network Fundamentals

How does MAC learning work?

  • A restricts ports to a maximum of 10 dynamically-learned addresses
  • B increases security on the management VLAN
  • C drops received MAC addresses not listed in the address table
  • D associates the MAC address with the port on which it is received
Explanation

MAC learning is the switch process of reading the source MAC address on an incoming frame and adding or updating an entry that maps that MAC address to the port where the frame was received. This is how the switch builds its forwarding table so future traffic can be sent out the correct interface.

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