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Digital Signals Test Review

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  • What type of signal is this an example of
    analog
  • What type of signal is this an example of
    digital
  • What type of signal is this an example of
    analog
  • Which signal is more reliable?
    Digital Signals
  • True or False: This image could be described as pixelated.
    True
  • Which signal is shown on this graph?
    Analog Signals
  • Human voice is an example of
    Analog Signals
  • What makes nearly every form of communication possible?
    Waves
  • What transmits information?
    Waves
  • Which value represents a digital signal being off?
    0
  • What type of signal is this an example of
    digital
  • Which signal can easily correct noise or distortion?
    Digital Signals
  • Which signal is used in computers and cell phones?
    Digital Signals
  • Which signal can only take on the values of 0 or 1?
    Digital Signals
  • Which signal loses accuracy over long distances?
    Analog Signals
  • The person receiving this message needs to be able to ______ the message
    decode or read
  • Which signal is shown on this graph?
    Digital Signals
  • True or False: Noise does not have as large an effect on digital signals because they have defined levels.
    True
  • What type of signal is this an example of
    digital
  • What is the name of the code that uses 0's and 1's to transmit information?
    Binary Code
  • Which signal is more susceptible to background noise/interference?
    Analog Signals
  • Which signal is this image an example of?
    Analog Signal
  • Which signal is best for storing large amounts of data?
    Digital Signals
  • All waves transfer what?
    Energy
  • Which signal is made up of infinite possible values?
    Analog Signals
  • Which value represents a digital signal being on?
    1
  • Samuel Morse developed which telecommunication system?
    Morse Code
  • What type of signal is this an example of
    analog
  • Which signal can travel long distances without losing its quality?
    Digital Signals
  • What type of signal is this an example of
    analog
  • Which signal is NOT continuous?
    Digital Signals
  • Combinations of short (dot) and long (dash) wave pulses that represent letters and numbers
    Morse Code
  • What type of signal is this an example of
    digital
  • Which signal is smooth and continuous?
    Analog Signals
  • Which signal has waves with a step-like appearance?
    Digital Signals
  • Which signals are more secure and useful for confidential information?
    Digital Signals
  • What type of signal is this an example of
    analog
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