Computer Networking
After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?

None of these
Word processor
Telex
Facsimile
Electronic mail

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Computer Networking
What is route poisoning?

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

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