Half-Duplex vs Full-Duplex Networks
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Questions and Answers

What is a characteristic of a half-duplex network?

  • Devices can only communicate with each other in one direction at a time. (correct)
  • Devices can communicate with each other in both directions simultaneously.
  • Devices can send and receive data at the same time.
  • Devices can only communicate with other devices on a different network.

    • What is an example of a full-duplex communication?

  • Transferring files via FTP.
  • Having a telephone conversation. (correct)
  • Using a walkie-talkie.
  • Sending an email.

    • What is the main difference between half-duplex and full-duplex networks?

  • The speed of data transfer.
  • The ability to communicate in both directions at the same time. (correct)
  • The type of network cable used.
  • The number of devices connected to the network.

    • What is the purpose of a 'policeman' in a half-duplex network?

    <p>To regulate the flow of traffic and avoid collisions.</p> Signup and view all the answers

    What is a limitation of half-duplex networks?

    <p>They have a lower bandwidth compared to full-duplex networks.</p> Signup and view all the answers

    What is the current trend in network usage?

    <p>Full-duplex networks are widely used, and half-duplex networks are mostly found in older equipment.</p> Signup and view all the answers

    Study Notes

    • In a half-duplex (poluduplex) network, two devices are connected point-to-point using a network cable, and they can communicate with each other in both directions, but only in one direction at a time.
    • In a half-duplex connection, if computer A sends data to computer B, computer B must wait until computer A finishes sending before it can send data back to computer A.
    • Half-duplex is similar to using a walkie-talkie, where one person must press a button to talk, and the other person cannot hear what the first person is saying until the button is released.
    • Full-duplex (duplex) is better than half-duplex because it allows devices to communicate with each other in both directions simultaneously.
    • In full-duplex, devices can send and receive data at the same time, giving it a doubled bandwidth compared to half-duplex.
    • A good example of full-duplex is a telephone conversation, where two people can talk and listen to each other simultaneously.
    • A half-duplex network can be compared to a one-lane road where cars must take turns using the lane, and a full-duplex network can be compared to a two-lane road where cars can travel in both directions simultaneously.
    • In a half-duplex network, a "policeman" (CSMA/CD) is needed to regulate the flow of traffic and avoid collisions.
    • Currently, full-duplex networks are widely used, and half-duplex networks are mostly found in older equipment that can only work in half-duplex mode.
    • Concentrators, which can only work in half-duplex mode, are an example of outdated equipment that are no longer used or available for purchase.

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    Description

    Learn about the key differences between half-duplex and full-duplex networks. Understand how data is transmitted in each type of network and how they compare to real-life scenarios.

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