Computer Networking
A communications medium that uses pulses of laser light in glass fibers. Select the best fit for answer:

Cellular phone systems
Telecommunications processors
Telecommunications software
Fiber optic cables

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Computer Networking
Which of the following statements is correct for the use of packet switching?

All of these
None of these
by employing wide bandwidth circuits for the trunk networks substantial economies through extensive sharing of capacity could be achieved.
the subdivision of information into individually addressed packets in conjunction with alternative routing arrangement enabled the transmission path to be altered in the event of congestion or individ
the employment of additional intelligence within the network enabled more sophisticated error control and link control procedures to be applied

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Computer Networking
What is split horizon?

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.
It holds the regular updates from broadcasting to a downed link.

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