Computer Networking
Communication circuits that transmit data in both directions but not at the same time are operating in

a full-duplex mode
None of these
an asynchronous mode
a half-duplex mode
a simplex mode

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Computer Networking
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?

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

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