Cisco Networking Simplified (2nd Edition)

'I highly recommend this book to anyone desiring to learn the basics about Cisco networking. This book has great visual illustration and easy to understand wording that a person can learn the terminologies and their functions. You will learn the OSI model and the way each layer communicate with each other. The technical aspect of the book is a guideline to understanding networking infrastructure, network design, securing a network and many more function such as VPN.