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Calculate the theoretical highest bit rate of a regular telephone line. The signal-to-noise ratio is usually 3162.

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Calculate the theoretical highest bit rate of a regular telephone line. The signal-to-noise ratio is usually 3162.

(a) 34.860 kbps

(b) 17.40 kbps

(c) 11.62 kbps

(d) none of the Mentioned

The question was asked in semester exam.

This intriguing question comes from Layers in division Cryptography Overview, TCP/IP and Communication Networks of Cryptograph & Network Security

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The correct choice is (a) 34.860 kbps

The best I can explain: C = B log (1+SNR) = 3000 log (1+3162) = 34,860 bps.

Logarithm here is in terms of base 2.

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