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  1. What does RIPv2 use to prevent routing loops?
    1. CIDR
    2. Split horizon
    3. Authentication
    4. Classless masking
    5. Holddown timers

    2. A.

     1 and 3
    B.

     2, 3 and 5
    C.

     2 and 5
    D.

     3 and 4

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    Answer : Option C

    Explanation :

    RIPv2 uses the same timers and loop-avoidance schemes as RIPv1. Split horizon is used to stop an update from being sent out the same interface it was received on. Holddown timers allow time for a network to become stable in the case of a flapping link.

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