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What does a switch do when a frame is received on an interface and the destination hardware address is unknown or not in the filter table?

Forwards the switch to the first available link
Drops the frame
Floods the network with the frame looking for the device
Sends back a message to the originating station asking for a name resolution

Correct Answer: Floods the network with the frame looking for the device

Explanation:

Switches flood all frames that have an unknown destination address. If a device answers the frame, the switch will update the MAC address table to reflect the location of the device.

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