Question

Working at the help desk, you receive a call and learn a user's PC IP address and mask (10.55.66.77, mask 255.255.255.0). When thinking about this using classful logic, you determine the number of network (n), subnet (s), and host (h) bits. Which of the following is true in this case?

Answer 1

Answer:

The correct answer to the following question is h = 8.

Explanation:

Because size of the network part always either be 8, 16, or 24 bits, it is based on whether it is the Class A, B, or C. As the Class A addresses, N=8. Mask 255.255.255.0, which is converted to the prefix format, is 24. The number of sub-net bits is difference between prefix length is (24) and the N, so, S = 16 in the case. Size of host part is the number when it added to prefix length which is (24) then, it give you 32.  

so that's why H=8 in this case.