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  1. Which protocol is used to send a destination network unknown message back to originating hosts?

    2. A.

     TCP
    B.

     ARP
    C.

     ICMP
    D.

     BootP

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    Workspace

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    Answer : Option C

    Explanation :

    ICMP is the protocol at the Network layer that is used to send messages back to an originating router.

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