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Working at a Small-to-Medium Business or ISP CCNA Discovery Learning Guide Working at a Small-to-Medium Business or ISP, CCNA Discovery Learning Guideis the official supplemental textbook for the Working at a Small-to-Medium Business or ISP course in the Ciscoreg; Networking Academyreg; CCNAreg; Discovery curriculum version 4.1. The course, the second of four in the new curriculum, teaches networking concepts by applying them to a type of network you might encounter on the job in a small-to-medium business or ISP. After successfully completing the first two courses in the CCNA Discovery curriculum, you can choose to complete the CCENTreg; (Cisco Certified Entry Network Technician) certification exam, which would certify that you have developed the practical skills required for entry-level networking support positions and have an aptitude and competence for working with Cisco routers, switches, and Cisco IOSreg; Software. TheLearning Guide, written and edited by instructors, is designed as a portable desk reference to use anytime, anywhere to reinforce the material from the course and organize your time. In addition, the book includes expanded coverage of CCENT/CCNA exam topics. The bookrs"s features help you focus on important concepts to succeed in this course: Chapter Objectives-Review core concepts by answering the focus questions listed at the beginning of each chapter. Key Terms-Refer to the lists of networking vocabulary introduced and highlighted in context in each chapter. The Glossary defines each key term. Summary of Activities and Labs-Maximize your study time with this complete list of all associated exercises at the end of each chapter. Check Your Understanding-Evaluate your readiness with the end-of-chapter questions that match the style of questions you see in the online course quizzes. The answer key explains each answer. Challenge Questions and Activities-Apply a deeper understanding of the concepts with these challenging end-of-chapter questions and activities. The answer key explains each answer. Hands-on Labs-Master the practical, hands-on skills of the course by performing all the tasks in the course labs and additional challenge labs included in Part II of the Learning Guide. Allan Reid is the curriculum lead for CCNA and a CCNA and CCNPreg; instructor at the Centennial College CATC in Toronto, Canada. Jim Lorenz is an instructor and curriculum developer for the Cisco Networking Academy. How To-Look for this icon to study the steps you need to learn to perform certain tasks. Interactive Activities-Reinforce your understanding of topics with more than 30 different exercises from the online course identified through-out the book with this icon. The files for these activities are on the accompanying CD-ROM. Packet Tracer Activities- Explore and visualize networking concepts using Packet Tracer exercises interspersed throughout most chapters. The files for these activities are on the accompanying CD-ROM. Packet Tracer v4.1 software developed by Cisco is available separately. Hands-on Labs-Master the practical, hands-on skills of the course by working through all 42 course labs and 3 additional labs included in this book. The labs are an integral part of the CCNA Discovery curriculum; revi
Allan Reid is the curriculum lead and a CCNA/CCNP instructor at the Centennial College CATC in Toronto, Canada. He is a professor in the Information and Communications Engineering Technology department and is an instructor and program supervisor for the School of Continuing Education at Centennial College. He has developed and taught networking courses for both private and public organizations and has been instrumental in developing and implementing numerous certificate, diploma, and degree programs in networking. Allan also is a curriculum developer for the Cisco Networking Academy. Outside his academic responsibilities, he has been active in the computer and networking fields for more than 25 years. Currently he is a principal in a company specializing in the design, management, and security of network solutions for small and medium-sized companies. Allan authored the first edition of WAN Technologies CCNA 4 Companion Guide(Cisco Press, ISBN 1-58713-172-2) and Using a Networker’s Journal, which is a supplement to A Networker’s Journal(Cisco Press, ISBN 1-58713-158-7). Most recently, he coauthored the CCNA Discoveryonline academy courses Networking for Home and Small Businessesand Introducing Routing and Switching in the Enterprisewith Jim Lorenz.
Jim Lorenz is an instructor and curriculum developer for the Cisco Networking Academy. He has coauthored several Cisco Press titles, including Fundamentals of UNIX Companion Guide, Second Edition (ISBN 1-58713-140-4), Fundamentals of UNIX Lab Companion, Second Edition (ISBN 1-58713-139-0), and the third editions of the CCNA Lab Companions. He has more than 20 years of experience in information systems, ranging from programming and database administration to network design and project management. Jim has developed and taught computer and networking courses for numerous public and private institutions. As the Cisco academy manager at Chandler-Gilbert Community College in Arizona, he was instrumental in starting the Information Technology Institute (ITI) and developed a number of certificates and degree programs. Most recently, Jim coauthored the CCNA Discoveryonline academy courses Networking for Home and Small Businessesand Introducing Routing and Switching in the Enterprisewith Allan Reid.
Table of Contents
|The Internet and Its Uses|
|Key Terms||p. 1|
|What Is the Internet||p. 2|
|The Internet and Standards||p. 2|
|Collaboration and Training||p. 3|
|ISPs and ISP Services||p. 4|
|Internet Service Providers||p. 4|
|Delivering Internet Services to End Users||p. 5|
|Dialup Access||p. 5|
|Cable Modem||p. 6|
|Dedicated Bandwidth Options||p. 6|
|Point of Presence||p. 7|
|Internet Hierarchy||p. 7|
|Tier 1 ISPs||p. 9|
|Tier 2 ISPs||p. 9|
|Tier 3 ISPs||p. 9|
|Identifying the Structure of the Internet||p. 9|
|Roles and Responsibilities Within an ISP|
|Activities and Labs|
|Check Your Understanding|
|Challenge Questions and Activities|
|Help Desk Technicians|
|ISP Help Desk Organization|
|Roles of ISP Technicians|
|Interacting with Customers|
|Using the OSI Model|
|OSI Model Protocols and Technologies|
|Upper Layers Create the Data|
|Layer 4 Packages the Data for End-to-End Transport|
|Layer 3 Adds the Network IP Address Information|
|Layer 2 Adds the Data Link Layer Header and Trailer|
|Layer 1 Converts the Data into Bits for Transmission|
|Troubleshooting Using the OSI Model|
|Help Desk Troubleshooting Example|
|Help Desk Troubleshooting Scenarios|
|Table of Contents provided by Publisher. All Rights Reserved.|
Introduction IntroductionThe Cisco Networking Academy is a comprehensive e-learning program that delivers information technology skills to students around the world. The CiscoCCNA Discoverycurriculum consists of four courses that provide a comprehensive overview of networking, from fundamentals to advanced applications and services. The curriculum emphasizes real-world practical application while providing opportunities for you to gain the skills and hands-on experience needed to design, install, operate, and maintain networks in small to medium-sized businesses, as well as enterprise and Internet service provider environments. TheWorking at a Small-to-Medium Business or ISPcourse is the second course in the curriculum.This book is the official supplemental textbook for the second course in v4.1 of the CCNA Discovery online curriculum of the Networking Academy. As a textbook, this book provides a ready reference to explain the same networking concepts, technologies, protocols, and devices as the online curriculum. In addition, it contains all the interactive activities, Packet Tracer activities, and hands-on labs from the online curriculum as well as bonus activities.This book emphasizes key topics, terms, and activities and provides many alternative explanations and examples as compared with the course. You can use the online curriculum as directed by your instructor and then also use this book's study tools to help solidify your understanding of all the topics. In addition, this book includes the following:Expanded coverage of CCENT/CCNA exam materialAdditional key glossary termsBonus labsAdditional Check Your Understanding and Challenge questionsInteractive activities and Packet Tracer activities on the CD-ROM Goals of This BookFirst and foremost, by providing a fresh, complementary perspective on the online content, this book helps you learn all the required materials of the second course in the Networking Academy CCNA Discovery curriculum. As a secondary goal, individuals who do not always have Internet access can use this text as a mobile replacement for the online curriculum. In those cases, you can read the appropriate sections of this book, as directed by your instructor, and learn the topics that appear in the online curriculum. Another secondary goal of this book is to serve as your offline study material to help prepare you for the CCENT and CCNA exams. Audience for This BookThis book's main audience is anyone taking the secondCCNA Discoverycourse of the Networking Academy curriculum. Many Networking Academies use this textbook as a required tool in the course. Other Networking Academies recommend theLearning Guidesas an additional source of study and practice materials. Book FeaturesThis book's educational features focus on supporting topic coverage, readability, and practice of the course material to facilitate your full understanding of the course material. Topic CoverageThe 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. The question format in theLearning Guideencourages 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, the text lists the steps as a how-to list. When you are studying, this icon helps you easily find this feature as you skim through the book.