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  1. Which of the following types of connections can use full duplex?
    1. Hub to hub
    2. Switch to switch
    3. Host to host
    4. Switch to hub
    5. Switch to host

    2. A.

     1, 2 and 4
    B.

     3 and 4
    C.

     3 and 5
    D.

     2, 3 and 5

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    Answer : Option D

    Explanation :

    Hubs cannot run full-duplex Ethernet. Full duplex must be used on a point-to-point connection between two devices capable of running full duplex. Switches and hosts can run full duplex between each other, but a hub can never run full duplex.

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