The CCNA Routing and Switching study guide, authored by Todd Lammle, is a comprehensive textbook covering Exam 100-105, Exam 200-105, and Exam 200. Published by John Wiley & Sons INC International Concepts in 2016, this 1136-page paperback provides in-depth content on computer science topics related to routing and switching. With a clear focus on the CCNA certification exams, this book is an essential resource for anyone looking to enhance their knowledge and skills in this field.