Computer Networking
If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?

Add the destination to the MAC address table and then forward the frame
Discard it and send an error message back to the originating host
Add the source address and port to the MAC address table and forward the frame out the destination port
Flood the network with the frame

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Computer Networking
Synchronous protocols

allow faster transmission than asynchronous protocols do
None of these
are generally used by personal computers
are more reliable
transmit characters one at a time

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