CCNA Command Quick Reference

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All the CCNA®-level commands in one compact, portable resource


With hundreds of Cisco IOS® Software commands, options, and command arguments to remember, a CCNA® candidate has a lot to commit to memory. Organizing your own engineering journal with notes is a task unto itself, and online resources are not always available. Now there’s help from the CCNA Command Quick Reference.


Filled with handy tips and examples on how to apply ...

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All the CCNA®-level commands in one compact, portable resource


With hundreds of Cisco IOS® Software commands, options, and command arguments to remember, a CCNA® candidate has a lot to commit to memory. Organizing your own engineering journal with notes is a task unto itself, and online resources are not always available. Now there’s help from the CCNA Command Quick Reference.


Filled with handy tips and examples on how to apply the commands to real-world scenarios, this easy-to-use, portable reference will help increase your familiarity with Cisco IOS Software when working on routers and switches or in simulated networks. CCNA Command Quick Reference summarizes all commands with keywords, command arguments, and associated prompts. The book includes many configuration examples, visually diagramming a network with related configuration and output. It also includes unique references on subnetting, variable-length subnet masking (VLSM), and common router configuration steps.


Designed as a memory booster, this book is an excellent supplementary guide for students in the Cisco Networking Academy® Program CCNA curriculum or anyone reviewing for the CCNA exam (640-821 INTRO, 640-811 ICND, or 640-801 CCNA).

Topics are covered in the order of modules in the four CCNA Networking Academy courses: 

CCNA 1–Networking Basics

CCNA 2–Routers and Routing Basics

CCNA 3–Switching Basics and Intermediate Routing

CCNA 4–WAN Technologies


Related Titles:

CCNA 1 and 2 Companion Guide

RevisedThird Edition

ISBN: 1-58713-150-1


CCNA 1 and 2 Lab Companion

Revised Third Edition

ISBN: 1-58713-149-8


CCNA 3 and 4 Companion Guide

Third Edition

ISBN: 1-58713-113-7


CCNA 3 and 4 Lab Companion

Third Edition

ISBN: 1-58713-114-5


Cisco CCNA Network Simulator

ISBN: 1-58720-131-3


This book is part of the Cisco Networking Academy Program Series from Cisco Press®. The products in this series support and complement the Cisco Networking Academy Program.


Quick Reference Chart Inside the Front Cover


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Product Details

  • ISBN-13: 9781587131592
  • Publisher: Cisco Press
  • Publication date: 4/28/2005
  • Pages: 240
  • Product dimensions: 6.00 (w) x 9.00 (h) x 0.49 (d)

Meet the Author

Scott Empson, CCDA, CCNP, CCAI, Network+, is an instructor in the telecommunications department at the Northern Alberta Institute of Technology in Edmonton, Alberta, Canada. He teaches Cisco routing, switching, and network design courses to students at the post-secondary level. Scott holds three undergraduate degrees: a bachelor of arts, with a major in English; a bachelor of education, with a major in English/language arts; and a bachelor of applied information systems technology, with a major in network management. After this project he plans to return to school to complete his master's degree.

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Table of Contents

Pt. I CCNA 1 1
Pt. II CCNA 2 3
Ch. 1 WANs and routers 5
Ch. 2 Introduction to routers 11
Ch. 3 Configuring a router 17
Ch. 4 Learning about other devices 27
Ch. 5 Managing Cisco ISO software 33
Ch. 6 Routing and routing protocols 43
Ch. 7 Distance vector routing protocols 47
Ch. 8 TCP/IP suite error and control messages 55
Ch. 9 Basic router troubleshooting 57
Ch. 10 Intermediate TCP/IP 61
Ch. 11 Access control lists (ACLs) 63
Pt. III CCNA 3 81
Ch. 1 Introduction to classless routing 83
Ch. 2 Single-area OSPF 87
Ch. 3 EIGRP 97
Ch. 4 Switching concepts 103
Ch. 5 Switches 105
Ch. 6 Switch configuration 107
Ch. 7 Spanning tree protocol 123
Ch. 8 Virtual LANs 125
Ch. 9 VLAN trunking protocol 135
Pt. IV CCNA 4 153
Ch. 1 Scaling IP technologies 155
Ch. 2 WAN technologies 165
Ch. 3 PPP 167
Ch. 4 ISDN and DDR 173
Ch. 5 Frame relay 185
Ch. 6 Introduction to network administration 195
App. A Subnetting 199
App. B VLSM 211
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Customer Reviews

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  • Anonymous

    Posted June 21, 2005

    Finally, a Hand-Sized Handbook!

    CCNA Command Quick Reference by Scott Empson is a small, but dense book stuffed with the most common commands you will use in daily practice. It is ideal for a student who is taking the CCNA courses or preparing for the CCNA exam. The networker who is into Cisco every day will know most of this book in his head. But there are always times when we forget the most basic things, especially if we don't do it everyday. No space in this book is wasted. The inside cover has a list of 'What do you want to do?' questions that send you straight to the answers you need. There is zero padding. To arrive at such an economy of words, Empson must have done many rewrites and painful cuts. But the result, page for page, is the most useful Cisco book I have ever read. There is nothing in this book that the CCNA candidate and anyone who works with Cisco equipment should not memorize. But since memory sometimes fails me, there will always be room on my desk for the CCNA Command Quick Reference. The layout is easy to read. Everything that you would actually see on a router is in blue. The commands you would type are in bold blue, and explanations are in black. The Units cover the four parts of the CCNA courses in the Cisco Network Academy program. The commands are covered in Parts II through IV. The appendix has a section dedicated to understanding subnetting and another section that covers VSLM. The inside back cover has a nice checklist entitled 'steps to configuring a router'.

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  • Anonymous

    Posted May 30, 2005

    This book is a blessing! / ¡Este libro es una bendición'

    ENGLISH: This book is a blessing! When I knew about this book, I was precisely in the difficult task of making a list of the IOS commands that are studied in the version 3.1 of CCNA. This was a task that I started with great enthusiasm because I firmly believed in the convenience of having a list to quickly locate a command, its syntax, description and parameters. I knew I was asking for too much, but it was worth the effort. When I was 5 pages deep in my work (all handwritten, with incomplete and disorganized commands) and with around 6 hours invested in the effort, I received some news from Cisco Press about this new book, and just by reading the title, I immediately knew what it was about and how much valuable it could be. I stopped my work and waited for the book, and believe me, it is worth it. The book is a full compilation of the IOS commands that are studied in the courses 2, 3 and 4 of CCNA. In course number 1 there aren¿t IOS commands, but even though, the subject of Subnetting is included in one of the appendixes. Commands are organized by course and chapter, therefore, its location corresponds to the subject distribution of the CCNA program. The commands presentation is excellent, but the book is more than a command list, it is full with examples and explanations, and many of them include network diagrams that are used to describe, step by step, a configuration process or the results of issuing a command. The book is not a replacement for other study materials; it is still necessary go through each course and understand the theory behind each command, but the problem is to remember all those commands and their possible variations, and it is here where this Quick Reference book doesn¿t have a comparison. The book has a small size, portable, and it is easy to handle, very different to the 2 thick Companion Guides volumes, where we can also find the same information but scattered along the chapters. I also think that having this Quick Reference in electronic format would be very convenient. CCNA Instructors and Students: Don¿t waste your time! Just one of your working days is much more expensive that the cost of this book, and you would need plenty of those days to produce something slightly similar to this material. Get a copy as soon as possible and thank the author for his work. I hope I will see more books like this for the other certifications. *************************************** SPANISH: ¡Este libro es una bendición! Cuando supe de este libro, precisamente me encontraba en la difícil tarea de hacer una lista de los comandos del IOS que se estudian en la versión 3.1 de CCNA. Esta fue una tarea que emprendí con gran entusiasmo después de creer firmemente en la conveniencia de contar con un listado en el que rápidamente se pudiera encontrar el comando con su sintaxis, descripción y parámetros. Yo sabía que estaba pidiendo demasiado, pero valía la pena hacerlo. Cuando me encontraba a 5 páginas de haber iniciado mi tarea (todas escritas a mano, con comandos incompletos y desorganizados) y con unas 6 horas invertidas en el esfuerzo, recibí noticias de Cisco Press acerca de este nuevo libro, y solamente con leer el título, inmediatamente supe de qué se trataba y que tan valioso resultaría ser. Detuve mi tarea y esperé por el libro, y créanme, vale la pena. El libro es una compilación completa de los comandos del IOS que se estudian en los cursos 2, 3 y 4 de CCNA; en el curso número 1 no hay comandos del IOS, pero aún así, el tema de Subredes está incluido en un apéndice. Los comandos están organizados por curso y por capítulo, de manera que su ubicación corresponde con la distribución de temas del programa CCNA. La presentación de los comando es excelente, pero el libro es más que una lista de comandos, está lleno de ejemplos y explicaciones, muchas de ellas incluyen diagramas de redes con los que paso a paso se describe un proceso de configuración o los resultados de la aplicac

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