CCNA exam study guide: Describe network communications using layered models

If the CCNA had a skeleton, networking models would be it; a solid understanding of these models supports your network knowledge. The networking models from CCNA 1 provide a framework for the concepts and configurations covered throughout the Cisco Networking Academy Program curriculum. In this sample chapter from 31 Days Before Your CCNA Exam: A Day-by-Day Quick Reference Study Guide, prepare for the CCNA exam by studying the Open System Interconnection (OSI) and TCP/IP layered models described in Modules 2, 5, 9, and 11 from CCNA 1 and the Cisco three-layer hierarchical model described in Module 5 from CCNA 3.

Title: 31 Days Before Your CCNA Exam: A Day-by-Day Quick Reference Study Guide
ISBN: 1-58713-174-9
Published: August 2006
Author: Scott Bennett
Chapter: Chapter 31: Describe Network Communications Using Layered Models
Published by Cisco Press