In the IPv4 addressing format, the number of networks allowed under Class C…

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In the IPv4 addressing format, the number of networks allowed under Class C addresses is

  1. A.

    2^14

  2. B.

    2^7

  3. C.

    2^21

  4. D.

    2^24

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Correct answer: C

In class C, 8 bits are reserved for Host Id and 24 bits are reserved for Network Id. Out of these 24 Network Id bits, the leading 3 bits are fixed as 110. So remaining 21 bits can be used for different networks.

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