Which of the following are valid host addresses for the subnet 203.0.113.64/28?

5 thoughts on “Which of the following are valid host addresses for the subnet 203.0.113.64/28?”

1. with /28 subnet we will have a block size of 16 between each network:

   203.0.113.0 ==> hosts (from 203.0.113.1 to 203.0.113.14)
   203.0.113.16 ==> hosts (from 203.0.113.17 to 203.0.113.30)
   .
   .
   203.0.113.64 ==> hosts (from 203.0.113.65 to 203.0.113.78) <== this network contains both .65 and .78 hosts
   203.0.113.80
   Thus, B&C

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2. the correct answer is B and C.

   /28 = 16 bits for the hosts
   = 16 adresses -2 (network + broadcast)
   = 14 available hosts.

   hostMin = 1
   hostMax = 14

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   1. I meant: /28 = 4 bits remaining for the hosts that equals 16 adresses.

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3. /28 = 255.255.255.240 = 7 ip´s
   only C

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   1. ops = 15 ip´s validos, B e C mesmo

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