What action takes place when the source MAC address of a frame entering a switch is not in the MAC address table?

Question:
What action takes place when the source MAC address of a frame entering a switch is not in the MAC address table?

• The switch forwards the frame out of the specified port.
• The switch will forward the frame out all ports except the incoming port.
• The switch adds the MAC address and incoming port number to the table.
• The switch adds a MAC address table entry mapping for the destination MAC address and the ingress port.

Case 2:

• The switch adds a MAC address table entry for the destination MAC address and the egress port.
• The switch adds the MAC address and incoming port number to the table.
• The switch replaces the old entry and uses the more current port.
• The switch updates the refresh timer for the entry.

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