A _________ is a sequence of voltage pulses that may be transmitted over a wired medium; for example,a constant positive voltage may represent binary 0,and a constant negative value may represent binary 1.
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Q24: _ data take on continuous values on
Q25: An _ is a continuously varying electromagnetic
Q26: An error-detecting scheme that employs a unique
Q27: In _ the phase of the carrier
Q28: The efficiency of an asynchronous transmission using
Q30: _ is concerned with the content of
Q31: In an operation very similar to that
Q32: Each signal change or element is called
Q33: A carrier wave is modulated with 4
Q34: _ data take on discrete values; examples
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