Computer Networking
A distributed data processing configuration in which all activities must pass through a centrally located computer is called a:

None of these
spider network
data control network
ring network
hierarchical network

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Computer Networking
Demodulation is a process of

converting digital to analog signals
multiplexing various signals into one high speed line signals
performing data description.
converting analog to digital signals

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Computer Networking
What is split horizon?

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

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