Computer Networking
A communications device that combines transmissions from several I/O devices into one line is a:

concentrator
modifier
None of these
full-duplex line
multiplexer

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Computer Networking
You telnet into a remote device and type debug ip rip, but no output from the debug command is seen. What could the problem be?

Debug output is sent only to the console.
You must type the show ip rip command first.
IP addressing on the network is incorrect.
You must use the terminal monitor command.

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