Quiz  /  Modulation and Demodulation Gate & PSU MCQ Questions With Answers...

  • 1. 
    Twisting in a twisted-pair help reduce the __________.

  • length
  • cost
  • noise
  • None of the choices are correct

  • 2. 
    Pulse Width Modulation also known as----

  • Pulse Amplitude Modulation
  • Pulse Position Modulation
  • Pulse Duration Modulation
  • Delta Modulation

  • 3. 
    In which modulation where the message information is encoded in the amplitude of a series of signal pulses.

  • PCM
  • PAM
  • PWM
  • DM

  • 4. 
    Radio waves, micro- waves and infrared waves are types of

  • wireless transmission
  • guided transmission
  • both a and b
  • None

  • 5. 
    Which one is the application of PAM?

  • used in Ethernet communication.
  • used in many micro-controllers for generating control signals.
  • used in Photo-biology.
  • All the above

  • 6. 
    Transmission media lie below the _______ layer.

  • physical
  • network
  • transport
  • application

  • 7. 
    In fiber optics, the signal is _______ waves.

  • light
  • radio
  • infrared
  • very low frequency

  • 8. 
    Pulse Width Modulation and Pulse Position Modulation are the type of

  • PULSE TIME MODULATION
  • PULSE AMPLITUDE MODULATION
  • PULSE CODE MODULATION
  • NONE OF THE ABOVE

  • 9. 
    Which one of the following is analog type of modulation?

  • Pulse Amplitude Modulation
  • Pulse-code modulation
  • Delta modulation
  • Adaptive Delta Modulation

  • 10. 
    Which one of the following is the type of PWM

  • Leading Edge
  • Trailing Edge
  • Both the edge
  • All the above

  • 11. 
    In electromagnetic spectrum for wireless communication, reserved range for Radio waves and microwaves is known as

  • ground propagation
  • sky propagation
  • line-of-sight propagation
  • None

  • 12. 
    Which of the following performs modulation and demodulation?

  • fiber optics
  • switch
  • modulator
  • modem

  • 13. 
    Which data communication method is used to transmit the data over a serial communication link?

  • Simplex
  • Half-duplex
  • Full duplex
  • All of above

  • 14. 
    Which one is the type of digital modulation type?

  • Pulse Amplitude Modulation
  • Pulse Width Modulation
  • Pulse Position Modulation
  • Pulse-code modulation

  • 15. 
    Which one is the advantage of PAM

  • simple process for both modulation and demodulation.
  • Transmitter and receiver circuits are simple
  • The data can be transmitted quickly
  • All the above
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