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The loss in single-mode fiber optic cable due to the glass is about ________

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The loss in single-mode fiber optic cable due to the glass is about ________

(a) 40 dB per km

(b) 0.4 dB per km

(c) zero

(d) 100 dB per km

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Enquiry is from Noise in Pulse Modulated System in portion Phase Locked Loop & Pulse Modulation of Analog Communications

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Correct choice is (b) 0.4 dB per km

The explanation: A duplex arrangement is a cordless telephone that uses separate frequencies for transmission in base and portable units. In duplex communication, sender and receiver can interact simultaneously while in half-duplex, sender and receiver communicates one at a time.

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