The Concise IPv4 Subnetting Guide (English Edition)

The guide will help teach basic IPv4 subnetting knowledge. It discusses positional notation, binary to decimal conversion (and vice versa), subnet masks, and subnetting methods such as Classless Inter-Domain Routing (CIDR) and Variable Length Subnet Masking (VLSM). There are also some practice questions and answers in the back of the book.