Computer Networking
How much power (roughly) a light-emitting diode can couple into an optical fiber?

None of these
100 picowatts
100 microwatts
440 microwatts
10 milliwatts

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Computer Networking
Contention is

One or more conductors that serve as a common connection for a related group of devices
a continuous frequency capable of being modulated or impressed with a second signal
None of these
the condition when two or more stations attempt to use the same channel at the same time
a collection of interconnected functional units that provides a data communications service among stations attached to the network

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