A would-be warrior who cannot read a simple address will get nowhere in this world. Let alone prowl freely within a
#subnet maze.
https://cromwell-intl.com/networking/ip-addresses-and-subnets.html?s=mc
IP Addresses, Subnets, and Slash Notation
A "Just Enough" look at what you really need to know. Understand IP addresses and subnets, and read and write the "slash notation" used in modern representations.
Conan the Sysadmin