Computer Networking
Demodulation is the process of

converting digital signals to analog signals
combining many low speed channels into one high speed channel
dividing the high-speed signals into frequency bands
None of these
converting analog signals to digital signals

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Computer Networking
What is route poisoning?

It prevents regular update messages from reinstating a route that has just come up.
It is information received from a router that can't be sent back to the originating router.
It sends back the protocol received from a router as a poison pill, which stops the regular updates.
It describes when a router sets the metric for a downed link to infinity.

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