The official self-study test preparation guide for the Cisco CCNA INTRO exam 640-821 Master CCNA INTRO exam topics, including: TCP/IP and OSI networking models Operating Cisco routers and LAN switches LAN switching basics, VLANs, and Trunking IP addressing and subnetting Basic router configuration and operation Discovering information about an IP network Dynamic routing protocols Analog modems, PAP/CHAP, DSL and Cable CCNA INTRO Exam Certification Guideis a best-of-breed Ciscoreg; exam study guide that has been completely updated to focus specifically on the objectives for the CCNA INTRO exam. Senior instructor and best-selling author Wendell Odom shares preparation hints and test-taking tips to help you identify areas of weakness and improve both your conceptual and hands-on knowledge. This new edition is organized in a modular fashion, segmenting larger chapters into smaller, more easily digestible components. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics. CCNA INTRO Exam Certification Guidepresents you with an organized test preparation routine through the use of proven series elements and techniques. "Do I Know This Already?" quizzes open each chapter and allow you to decide how much time you need to spend on each section. Chapter subject lists and Foundation Summary tables make referencing easy and give you a quick refresher whenever you need it. Challenging chapter-ending review questions help you assess your knowledge and reinforce key concepts. Scenario-based exercises help you think about exam objectives in real-world situations, thus increasing recall during exam time. The companion CD-ROM contains a powerful new testing engine that allows you to focus on individual topic areas or take complete, timed exams from INTRO or unified CCNA test banks. The assessment engine also tracks your performance and presents feedback on a module-by-module basis, providing question-by-question remediation to the text and laying out a complete study plan for review. The CD-ROM also includes a wealth of hands-on practice exercises and a copy of the Boson NetSimtrade; for CCNA INTRO, Learning Edition, network simulation software that allows you to practice your hands-on skills in a virtual lab environment that has been customized for the labs in the book. The supporting website keeps you fully informed of any exam changes. Well-regarded for its level of detail, assessment features, and challenging review questions and hands-on exercises, this book helps you master the concepts and techniques that will enable you to succeed on the exam the first time. CCNA INTRO Exam Certification Guideis part of a recommended study program from Cisco Systemsreg; that includes simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press. To find out more about instructor-led, e-learning, and hands-on instruction offered by authorized Cisco Learning Partners worldwide, please visit www.cisco.com/go/authorizedtraining. Companion CD-ROM The CD-ROM contains more than 400 practice questions for the ICND, INTRO, and CCNA exams, including simulation-based questions. Also contains hands-on exercises a