The 640-801 Cisco CCNA Cisco Certified Network Associate exam certification guide by Wendell Odom is a comprehensive guide that prepares candidates for the CCNA certification exam. The book covers all the topics that are part of the CCNA certification exam, including networking fundamentals, Ethernet LANs, WANs, IP addressing, routing protocols, network security, and more.

The guide starts by providing an overview of networking, including the OSI reference model, TCP/IP protocols, and Ethernet LANs. It then goes on to cover WAN technologies such as Frame Relay and PPP, followed by routing protocols like OSPF and EIGRP. The book also covers network security topics such as access control lists, VPNs, and firewalls.

The book features detailed explanations of each topic, with numerous examples and figures to aid in understanding. The guide also includes chapter-ending review questions and a practice test to help candidates gauge their understanding of the material.

One of the key strengths of this book is the author's writing style. Wendell Odom is known for his clear and concise explanations, making the complex networking concepts easy to understand for readers with varying levels of experience. The author also includes helpful tips and strategies for taking the exam, such as how to approach multiple-choice questions and how to manage your time during the test.

The book includes a CD-ROM with practice questions and simulations, giving candidates the opportunity to practice their skills and test their knowledge in a simulated exam environment. The guide also provides access to online resources, including additional practice questions, quizzes, and flashcards.

Overall, the 640-801 Cisco CCNA Cisco Certified Network Associate exam certification guide by Wendell Odom is an excellent resource for anyone seeking CCNA certification. The book covers all the necessary topics and provides clear explanations, helpful tips, and valuable practice materials to help candidates prepare for the exam.