CISSP Practice question #82

Our networking department is recommending we use a half-duplex solution for an implementation, what is a key feature of those?
A: One way communication, one system transmits the other receives, direction can’t be reversed.
B: Both systems can send and receive at the same time.
C: Only one system on the network can send one signal at a time.
D: One way communication, one system transmits the other receives, direction can be reversed.

CBK 4: Communication and Network Security
Source: ThorTeaches.com practice tests

Answer


D: Half-duplex communication sends or receives at one time only (Only one system can transmit at a time).

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25 Comments

  1. Well half duplex means that you can transmit in both directions but only one at a time. That easily eliminates A & B. So C & D are the only possible ones with D having the “it can be reversed” part O would assume though it does not say it answer C is too vague leaving D

    1. The half-duplex transmission is capable of sending signal in both directions, but in only one direction at a time. Some networks use half-duplex transmission, but it is required to specify this requirement for all the nodes in the network. An example could be police car radio phones allowing one person talk at a time.

      So half duplex consider us one way communication?

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