Wireless (Unguided Media) Transmission Quiz
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Questions and Answers

What type of communication uses electromagnetic waves to carry signals?

  • Infrared
  • Microwaves
  • Radio waves (correct)
  • Bluetooth

    • Which wireless communication medium operates at a higher frequency and is used for point-to-point communications between cell towers and satellite communications?

  • Bluetooth
  • Microwaves (correct)
  • Radio waves
  • Infrared

    • For short-range communication such as TV remote controls and wireless mice, which form of unguided media is commonly used?

  • Bluetooth
  • Infrared (correct)
  • Radio waves
  • Microwaves

    • Which wireless transmission method does not pass through solid walls and provides better security and no interference?

    <p>Infrared</p> Signup and view all the answers

    What type of wireless transmission requires clear line-of-sight and the use of a parabolic dish?

    <p>Microwaves</p> Signup and view all the answers

    What is the purpose of a multiplexer (MUX) in data communication?

    <p>Maximizes the utilization of available bandwidth and allows multiple signals to share a common communication channel.</p> Signup and view all the answers

    Which technique involves allocating different frequency bands to different signals for simultaneous transmission in separate frequency ranges?

    <p>Frequency division multiplexing (FDM)</p> Signup and view all the answers

    What is the purpose of a demultiplexer (DEMUX) in data communication?

    <p>Restores the multiple signals to their original form and separates the combined signals back into their original, individual components.</p> Signup and view all the answers

    What does TDM (Time Division Multiplexing) involve?

    <p>Dividing the signal into separate time slots for transmission.</p> Signup and view all the answers

    What distinguishes Statistical (asynchronous) TDM from Synchronous TDM?

    <p>Statistical TDM allocates slots dynamically based on demand, while Synchronous TDM allocates fixed, pre-defined slots.</p> Signup and view all the answers

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