CCENT/CCNA ICND1 100-101 Official Cert Guide

Problem Set 2, Answer 1: 172.32.0.0/25

This problem has a 9-bit subnet field, meaning that 2⁹, or 512, possible subnets exist. The following list shows some of the subnets, which should be enough to see the trends in how to find all subnet numbers:

172.32.0.0 (zero subnet)

172.32.0.128

172.32.1.0

172.32.1.128

172.32.2.0

172.32.2.128

172.32.3.0 ...