CCNA Routing and Switching 200-125 Exam Cram, Fifth Edition, is the perfect study guide to help you pass the Cisco 200-125 CCNA exam, providing coverage and practice questions for every exam topic. The book contains an extensive set of preparation tools, including topic overviews, ExamAlerts, CramSavers, CramQuizzes, chapter-ending review questions, author notes and tips, and an extensive glossary.
This is a very good book to understand basic networking concepts. Routing as well as switching. You will love this book. TCP IP, UDP,IP packet flows, various protocols etc. This book comes with theory as well as questions. You can test, how much you learnt. Overall, a very useful book.