Answers: How Many Subnets/Hosts 2
The answers for the most recent subnetting speed practice, for “find the number of subnets and hosts question 2” are below the fold – FYI. Ask questions as needed.
The figure shows the big concept to find the number of network, subnet, and host bits. From there, it’s just doing calculations per the powers of 2.
Here are the answers to this set of questions.
|
|
Class |
Network Bits (N) |
Subnet Bits (S = P – N) |
Host Bits (32 – P) |
|
1 |
A |
8 |
14 |
10 |
|
2 |
A |
8 |
1 |
23 |
|
3 |
B |
16 |
8 |
8 |
|
4 |
C |
24 |
5 |
3 |
|
5 |
C |
24 |
4 |
4 |
|
|
Number of Subnets |
Number of Hosts |
|
1 |
2^14 = 16,384 |
2^10 – 2 = 1022 |
|
2 |
2^1 = 2 |
2^23 – 2 = 8,388,606 |
|
3 |
2^8 = 256 |
2^8 – 2 = 254 |
|
4 |
2^5 = 32 |
2^3 – 2 = 6 |
|
5 |
2^4 = 16 |
2^4 – 2 = 14 |