Physical Layer Communication
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Questions and Answers

Which of the following describes the nature of analog data?

  • Analog data can have only a limited number of defined values.
  • Analog data take on continuous values, such as the sounds made by a human voice. (correct)
  • Analog data take on discrete values, such as data stored in computer memory.
  • Analog data changes without a repeated pattern or cycle.

    • What is the main difference between analog and digital signals?

  • Analog signals are patterns of signals repeated over identical periods of time, while digital signals have only a few discrete values.
  • Analog signals have infinitely many levels of intensity over a period of time, while digital signals change without a repeated pattern or cycle. (correct)
  • Analog signals can have only a limited number of defined values, while digital signals take on continuous values.
  • Analog signals change without a repeated pattern or cycle, while digital signals have a limited number of defined values.

    • What type of data are stored in computer memory?

  • Analog data
  • Non-periodic data
  • Analog and digital data
  • Digital data (correct)

    • What is the fundamental form of a periodic analog signal?

    <p>Sine wave</p> Signup and view all the answers

    How can analog data be transmitted across a medium?

    <p>Converted to an analog signal</p> Signup and view all the answers

    Study Notes

    Analog Data

    • Analog data is continuous, varying in intensity or amplitude, and can take on any value within a range.

    Analog vs Digital Signals

    • The main difference between analog and digital signals is that analog signals are continuous while digital signals are discrete and take on distinct values.

    Data Storage

    • Computer memory stores digital data.

    Periodic Analog Signals

    • The fundamental form of a periodic analog signal is a sinusoidal wave.

    Analog Data Transmission

    • Analog data can be transmitted across a medium through modulation, such as amplitude modulation (AM) or frequency modulation (FM).

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    Description

    Test your knowledge of the physical layer in data communication with this quiz. Explore topics such as analog and digital data transmission, signal exchange, and the transformation of data to electrical or electromagnetic signals.

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