CCNA Routing and Switching Complete Review Guide. Lammle Todd

      Todd Lammle

      CCNA® Routing and Switching Complete

CCNA^®

Routing and Switching Complete

Review Guide

Second Edition

Todd Lammle

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      Acknowledgments

      First, a loud callout to Troy McMillan, who was instrumental in putting this book together. He spent countless hours combining and summarizing my work from the CCENT and CCNA ICND2 study guides into what is a really nice review guide for the CCNA Routing and Switching certification. Thank you, Troy!

      Thanks to Ken Brown, who always keeps me working hard and makes sure I am headed in the right direction. This is no easy task for Ken!

      And thanks to my production editor, Christine O'Connor, for keeping the book on track, and Amy Breguet, for keeping all the edits in order and on time. And I can't forget Judy Flynn, the backbone of all my books, who reads every word over and over until the chapters are nearly flawless!

      Thank you all!

      About the Author

      Todd Lammle Cisco certified in almost every category, is the authority on Cisco networking and certification. His three decades of real-world experience is prevalent in his writing. He is an experienced networking engineer with very practical experience working on the largest bounded and unbounded networks in the world at such companies as Xerox, Hughes Aircraft, Texaco, AAA, Cisco, and Toshiba, among many others. Todd has published over 60 books, including the very popular and bestselling CCNA: Cisco Certified Network Associate Study Guide and Cisco Firepower NGIPS. Todd runs an international training company from Texas and a large-scale consulting business out of Colorado. You can reach Todd through his forum and blog at www.lammle.com/ccna.

      Introduction

      Welcome to the exciting world of Cisco certification! If you've picked up this book because you want to improve yourself and your life with a better, more satisfying, and secure job, you've done the right thing. Whether you're striving to enter the thriving, dynamic IT sector or seeking to enhance your skill set and advance your position within it, being Cisco certified can seriously stack the odds in your favor to help you attain your goals!

      Cisco certifications are powerful instruments of success that also markedly improve your grasp of all things internetworking. As you progress through this book, you'll gain a complete understanding of networking that reaches far beyond Cisco devices. By the end of this book, you'll comprehensively know how disparate network topologies and technologies work together to form the fully operational networks that are vital to today's very way of life in the developed world. The knowledge and expertise you'll gain here is essential for and relevant to every networking job and is why Cisco certifications are in such high demand – even at companies with few Cisco devices!

      Although it's now common knowledge that Cisco rules routing and switching, the fact that it also rocks the voice, data center, and service provider worlds is also well recognized. And Cisco certifications reach way beyond the popular but less extensive certifications like those offered by CompTIA and Microsoft to equip you with indispensable insight into today's vastly complex networking realm. Essentially, by deciding to become Cisco certified, you're proudly announcing that you want to become an unrivaled networking expert – a goal that this book will get you well on your way to achieving. Congratulations in advance on the beginning of your brilliant future!

      For up-to-the-minute updates covering additions or modifications to the Cisco certification exams, as well as additional study tools, videos, review questions, and bonus materials,