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

100 picowatts
10 milliwatts
None of these
100 microwatts
440 microwatts

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Computer Networking
The term 'duplex' refers to the ability of the data receiving stations to echo back a confirming message to the sender. In full duplex data transmission, both the sender and the receiver

can receive and send data simultaneously
can send or receive data one at a time
cannot talk at once
None of these
can do one way data transmission only

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