Computer Networking
Modulation is the process of

converting analog signals to digital signals
converting digital signals to analog signals
Multiplexing various signals into high speed line signals
performing data encryption.

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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?

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
Drops the frame

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