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Answer must be C

Subnetting is implementing by converting 0s to 1 in subnet mask.

On borrowing  x bits we can make maximum of 2 x subnets

  • In given problem, default mask of class C  255.255.255.0 is used.
  • Hence number of borrowed bits =0
  • Maximum  number of subnets  = 2 0 =1

Each subnet will have maximum of 2 y -2 hosts, where y is the unborrowed bits

Here no of nborrowed bits = 8

Maximum number of hosts per subnet = 2 8 - 2 =254

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