Which of the following statements best describes what a switch does with a frame destined for an unknown unicast address?
- It forwards out all interfaces in the same VLAN except for the incoming interface.
- It forwards the frame out the one interface identified by the matching entry in the MAC address table.
- It compares the destination IP address to the destination MAC address.
- It compares the frame’s incoming interface to the source MAC entry in the MAC address table.
Explanation: A switch floods broadcast frames, multicast frames (if no multicast optimizations are enabled), and unknown unicast destination frames (frames whose destination MAC address is not in the MAC address table).
