PHYSICAL LAYER AND TRANSMISSION MEDIA
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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With nonreturn to zero signaling, the voltage alternates between zero and a positive or negative voltage.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Propagation delay is negligible with satellite transmission. One form of interference with satellite transmission is called raindrop attenuation in which the transmissions are absorbed by heavy rain. Fiber optic cable can only be used on LANs. Radio, microwave and satellite are all examples of guided media.
Detailed explanation-2: -Answer: False. A walkie-talkie is an example of half-duplex transmission. In full-duplex transmission, two stations can send and receive simultaneously. The medium is the physical matter or substance that carries the voice or data transmission.
There is 1 question to complete.