About the Author
Wayne Lewis is the Cisco Academy Manager for the Pacific Center for Advanced Technology Training (PCATT), based at Honolulu Community College (HonCC), and the Legal Main Contact for the CCNA/CCNP/Network Security Cisco Academy Training Center at PCATT/HonCC. Since 1998, Wayne has taught routing and switching, wide area networking, network troubleshooting, network security, wireless networking, IP telephony, and quality of service to instructors from universities, colleges, and high schools in
Australia, Canada, Mexico, Central America, South America, United States, American Samoa, Guam, China, Hong Kong, Taiwan, Indonesia, Singapore, Korea, Japan, Italy, Germany, Netherlands, Sweden, Poland, Hungary, and Great Britain, both onsite and at PCATT/HonCC. Cisco has sent Wayne to several countries to conduct inaugural Networking Academy teacher-training sessions to certify the initial cohorts of instructors and kick off the training centers for these countries. Before teaching networking, Wayne began teaching
at age 20 at Wichita State University, followed by the University of Hawaii and HonCC. In 1992, Wayne received a Ph.D. in math, specializing in finite rank torsion-free modules over a Dedekind domain; he now works on algebraic number theory research in his spare time. Wayne works as a contractor for Cisco , performing project management for the development of network security, CCNA, and CCNP curriculum. He and his wife, Leslie, also run a network consulting company. Wayne enjoys surfing the South Shore of Oahu in
the summer and surfing big waves on the North Shore in the winter.
Excerpt. © Reprinted by permission. All rights reserved.
The Cisco Networking Academy is a comprehensive e-learning program that provides students with Internet technology skills. A Networking Academy delivers web-based content, online assessment, student performance tracking, and hands-on labs to prepare students for industry-standard certifications. The CCNA curriculum includes four courses oriented around the topics on the Cisco Certified Network Associate (CCNA) certification.
LAN Switching and Wireless, CCNA Exploration Companion Guide is the official supplement textbook to be used with v4 of the CCNA Exploration LAN Switching and Wireless online curriculum of the Networking Academy.
This book goes beyond earlier editions of the Cisco Press Companion Guides by providing many alternative explanations and examples as compared with the course. You can use the online curriculum as normal and use this companion guide to help solidify your understanding of all the topics through the alternative examples.
The basis for this book, as well as the online curriculum, is to provide the reader with a thorough understanding of LAN switching and wireless technologies beyond that necessary for the CCNA certification exam. The commands and web-based GUI utilities for configuring LAN switching and wireless are not very difficult. The challenge is to understand the operation of these technologies and protocols and their role in the network.
The objective of this book is to explain LAN switching and wireless technologies. Every concept is methodically explained with no assumptions made of the reader's knowledge of LAN switching or wireless technologies. The only exceptions are if a concept is beyond the scope of this course or is covered in CCNP, and then it is noted within the text.
Readers are encouraged to peruse the resources managed by Wayne Lewis at cisco.honolulu.hawaii.edu. Please e-mail Wayne Lewis at firstname.lastname@example.org for more information about CCNP and network security instructor training and for access to more resources for this course and other CCNP, IP telephony, QoS, and network security courses.
Goal of This Book
First and foremost, by providing a fresh, complementary perspective on the content, this book is intended to help you learn all the required materials of the LAN Switching and Wireless course in the Networking Academy CCNA Exploration curriculum. As a secondary goal, the text is intended as a mobile replacement for the online curriculum for individuals who do not always have Internet access. In those cases, you can instead read the appropriate sections of the book, as directed by your instructor, and learn the same material that is covered in the online curriculum. Another secondary goal is to serve as your offline study material to prepare for the CCNA exam.
Audience for This Book
This book's main audience is anyone taking the CCNA Exploration LAN Switching and Wireless course of the Cisco Networking Academy curriculum. Many Academies use this textbook as a required tool in the course, and other Academies recommend the Companion Guides as an additional source of study and practice materials.
The educational features of this book focus on supporting topic coverage, readability, and practice of the course material to facilitate your full understanding of the course material.
The following features give you a thorough overview of the topics covered in each chapter so that you can make constructive use of your study time:
Objectives: Listed at the beginning of each chapter, the objectives reference the core concepts covered in the chapter. The objectives match the objectives stated in the corresponding chapters of the online curriculum; however, the question format in the Companion Guide encourages you to think about finding the answers as you read the chapter.
"How-to" feature: When this book covers a set of steps that you need to perform for certain tasks, this book lists the steps as a how-to list. When you are studying, the icon helps you easily refer to this feature as you skim through the book.
Notes, tips, cautions, and warnings: These are short sidebars that point out interesting facts, time-saving methods, and important safety issues.
Chapter summaries: At the end of each chapter is a summary of the chapter's key concepts. It provides a synopsis of the chapter and serves as a study aid.
The author has compiled, edited, and in most cases rewritten the material so that it has a more conversational tone that follows a consistent and accessible college-reading level. In addition, the following features have been updated to assist your understanding of the networking vocabulary:
Key terms: Each chapter begins with a list of key terms, along with a page-number reference from inside the chapter. The terms are listed in the order in which they are explained inside the chapter. This handy reference allows you to find a term, flip to the page where the term appears, and see the term used in context. The Glossary defines all the key terms.
Glossary: This book contains an all-new Glossary with more than 150 terms.
Practice makes perfect. This new Companion Guide offers you ample opportunities to put what you learn to practice. You will find the following features valuable and effective in reinforcing the instruction that you receive:
Check Your Understanding questions and answer key: Updated review questions are presented at the end of each chapter as a self-assessment tool. These questions match the style of questions that you see in the online course. The Appendix, "Check Your Understanding and Challenge Questions Answer Key," provides an answer key to all the questions and includes an explanation of each answer.
(NEW) Challenge questions and activities: Additionaland more challengingreview questions and activities are presented at the end of chapters. These questions are purposefully designed to be similar to the more complex styles of questions you might see on the CCNA exam. This section might also include activities to help prepare you for the exams. The Appendix provides the answers.
Packet Tracer activities: Interspersed throughout the chapters, you'll find many activities to work with the Cisco Packet Tracer tool. Packet Tracer allows you to create networks, visualize how packets flow in the network, and use basic testing tools to determine whether the network would work. When you see this icon, you can use Packet Tracer with the listed file to perform a task suggested in this book. The activity files are available in this book's CD-ROM; Packet Tracer software, however, is available through the Academy Connection website. Ask your instructor for access to Packet Tracer.
Labs and Study Guide
The supplementary book LAN Switching and Wireless, CCNA Exploration Labs and Study Guide (ISBN: 1-58713-202-8) by Cisco Press contains all the labs from the curriculum plus additional challenge labs and study guide material. The end of each chapter of this Companion Guide indicates with icons what labs, activities, and Packet Tracer activities are available in the Labs and Study Guide.
Lab references: This icon notes the hands-on labs created for this chapter in the online curriculum. Within the LAN Switching and Wireless, CCNA Exploration Labs and Study Guide you will find additional study guide material created by the author of that book.
(NEW) Packet Tracer Companion activities: Many of the Hands-on Labs include Packet Tracer Companion Activities where you can use Packet Tracer to complete a simulation of the lab. Look for this icon in the LAN Switching and Wireless, CCNA Exploration Labs and Study Guide for Hands-on Labs that have a Packet Tracer Companion.
(NEW) Packet Tracer Skills Integration Challenge activities: These activities require you to pull together several skills learned from the chapter to successfully complete one comprehensive exercise. Look for this icon in the LAN Switching and Wireless, CCNA Exploration Labs and Study Guide for instructions on how to perform the Packet Tracer Skills Integration Challenge for this chapter.
A Word About Packet Tracer
Packet Tracer is a self-paced, visual, interactive teaching and learning tool developed by Cisco. Lab activities are an important part of networking education. However, lab equipment can be a scarce resource. Packet Tracer provides a visual simulation of equipment and network processes to offset the challenge of limited equipment. Students can spend as much time as they like completing standard lab exercises through Packet Tracer and have the option to work from home. Although Packet Tracer is not a substitute for real equipment, it allows students to practice using a command-line interface. This "e-doing" capability is a fundamental component of learning how to configure routers and switches from the command line.
Packet Tracer v4.x is available only to Cisco Networking Academies through the Academy Connection website.
The course includes essentially three types of Packet Tracer activities. This book uses an icon system to indicate which type of Packet Tracer activity is available. The icons are intended to give you a sense of the purpose of the activity and the amount of time you need to allot to complete it. The three types of Packet Tracer activities follow: