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Which system uses digital transmission?(a) ISDN(b) LANs(c) ISDN & LANs(d) None of the mentionedThe question was posed to me in examination.This is a very interesting question from Digital Communication topic in portion Signals and Spectra of Digital Communications

Answer» RIGHT CHOICE is (c) ISDN & LANs

The explanation is: Though the signal type is analog or DIGITAL, the transmission takes place in the digital domain in ISDN and LANs.


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