Computer Networking
What is split horizon?

It holds the regular updates from broadcasting to a downed link.
It splits the traffic when you have a large bus (horizon) physical network.
It prevents regular update messages from reinstating a route that has gone down.
Information about a route should not be sent back in the direction from which the original update came.

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Computer Networking
Demodulation is the process of

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

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