Question

If class b network on the internet has a subnet mask of 255.255.248.0 what is the maximum number of host

Answer 1

Answer:

ans is 1.

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Answer 2

The 'maximum number of host class b network' on the 'internet' has a 'subnet mask of 255.255.248.0 is 2046'

Explanation:

• The 'subnet mask 255.255.248.0' has binary representation as  '11111111.11111111.11111000.00000000'. Here in this '21 bits' set in the subnet. So (32-21) = 11 bits are taken for host ids.
• Hence, the 'Total possible values of host ids' are '2^11 = 2048'. Out of these '2048' values, two 'addresses' are reserved. The 'address' with all 'bits as 1' is reserved as 'broadcast address' and 'address' with all 'host' id bits as '0' is used as the subnet network address.
• The number of 'addresses' usable for 'addressing' specific 'hosts in each network' is always '2^N - 2' where N is the 'number of bits for host id'.
• In our 'case for subnet mask 255.255.248.0', number of hosts is '2^N - 2' = '2^11 - 2' = '2048 - 2 = 2046'.

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