The Companion Guide is designed as a supplemental textbook for the Networking Academy course. The purpose for this textbook is to offer students a portable desk reference of the course content to use anytime anywhere as a study aid. The chapter content will align 1:1 to the online course module topics, but not necessarily word-for-word. The contributing author has extensive classroom experience and will present the course material in the Companion Guide in a comprehensive manner, providing his own examples where necessary to augment a student's understanding of the course material.