Data Communication Knowledge Quiz
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Questions and Answers

What is data communication?

  • The transfer of data only in the form of a digital bitstream over a communication channel
  • The transfer and reception of data in the form of an electromagnetic signal
  • The transfer and reception of data in the form of a digital bitstream or a digitized analog signal over a communication channel (correct)
  • The reception of data only in the form of a digitized analog signal over a communication channel
  • What is analog transmission?

  • A method of conveying voice, data, image, signal or video information using a continuous signal which varies in amplitude, phase, or some other property in proportion to that of a variable (correct)
  • A method of conveying digital information using a continuous signal
  • A method of conveying data using a discontinuous signal
  • A method of conveying only voice information using a continuous signal
  • How are messages represented in passband transmission?

  • By a limited set of continuously varying waveforms using a digital modulation method (correct)
  • By a limited set of continuously varying waveforms using an analog modulation method
  • By a sequence of pulses using a line code
  • By a single continuously varying waveform using a digital modulation method
  • Which channels can be used for data communication?

    <p>Copper wires, optical fibers, wireless communication using radio spectrum, storage media, and computer buses</p> Signup and view all the answers

    What is the data represented as in data communication?

    <p>An electromagnetic signal, such as an electrical voltage, radiowave, microwave, or infrared signal</p> Signup and view all the answers

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