Ccna learning and experiment Guide (640-802)

Before Yan

Cisco's professional qualification certificate has always been known as the "high-paying Express" in the world. It shows its gold content and is valued by many people. Cisco certification means joining the industry-recognized and respected network professionals. By studying and mastering the content of this book, the chance of a successful Cisco certificate is naturally much higher.

This book is closely centered on the syllabus of Cisco ccna's latest exam subject 640-802, which is essentially different from traditional textbooks and general training materials. It presents more than just a textbook to readers, it also provides a comprehensive network experiment environment. With only one computer, you can complete the experiment configuration and testing of all vrouters and switches involved in this book. Most ccna textbooks also involve lab configurations. However, readers may not have enough network devices to sigh and the learning effect is compromised.

This book elaborates on the theory in combination with experiments, which is vivid. The last questions in each chapter are taken from the true questions of the ccna examination and answered with the knowledge learned in this chapter to help readers pass the examination smoothly; the experiments in many chapters are based on actual needs, bringing readers closer to practice and making readers a true ccna. The experiment frame designed for this book is as follows, it can also be used in the actual working environment to solve the reader's troubles without a router.

Limited by the author's level and time, some small errors are inevitable. Sorry for the shortcomings.

Video Disc

The related CD provides the author's Chinese video, supplementary materials, experiment configuration and troubleshooting scenarios for more than 1300 minutes.

All the applications and programs involved in this book can be downloaded from the author's personal homepage http://blcui.njut.edu.cn/ccnanew.rar. To make it easier for readers to read and communicate with each other, the author's personal homepage has opened the Forum at http://blcui.njut.edu.cn/bbs.

Purpose of this book

This book not only teaches Cisco's network technology, but also helps readers get familiar with the ccna test routine and help them pass the ccna test smoothly. More importantly, this book will also cultivate the reader's hands-on ability and practice level, and cultivate the reader into a true ccna, not just a paper certificate.

This book has been carefully compiled by the author for one year. It presents not only a teaching material, but also a comprehensive network experimental environment, this allows readers to deeply understand the essence of network technology. With only one computer, you can Virtualize multiple routers, switches, and hubs and combine them perfectly, complete the experiment configuration and testing of almost all routes and switches involved in the book.

Contents

This book uses theoretical explanations, video demonstrations, true question analysis, and a large number of hands-on experiments to cultivate a true ccna. The book follows the 640-802 examination syllabus and systematically analyzes and introduces all the knowledge points covered in the ccna examination. The importance of each knowledge point in the examination is marked, and each chapter is followed by a recent analysis of the ccna question. The book consists of 22 chapters, which cover three aspects: Basic knowledge of network interconnection and network reference model, introduction of Cisco routers and switches, the principles and configurations of static and dynamic routing protocols (including rip, VPN, and OSPF), the implementation of routing between VLANs, and the use of CDP, VTP, and STP protocols, wireless Network Interconnection and IPv6; Wan part: WAN Access Technology, use of PPP and frame relay, DHCP and Nat; network security part: Network Security introduction, use of the access control list and implement secure remote office.

Target Audience

This book is especially suitable for those who are eager to obtain the ccna certification. While obtaining the certification, the book truly possesses the ccna capability. It can also be used as a teaching material for Computer Network Technology in colleges and universities to make up for the shortcomings of experimental equipment, it is also a rare lab instruction book for network enthusiasts who want to master network technology, improve their hands-on ability, and apply it to practice.

Key points of the ccna Examination

The importance of each chapter and segment in the book is represented by an asterisk. *** indicates important, ** indicates important, and * Indicates not important, no * indicates that this section or section will hardly appear in the ccna exam. The content that does not appear in the ccna exam does not mean that it is not used in practice. On the contrary, the content that does not involve the ccna exam is mostly the knowledge or skills that are frequently used in practice.

Syntax expression habits in this book

This book adds shading to most configuration commands;

The description of the configuration command is in italic text;

The command and its output are displayed in the courier new font, and the important highlights are displayed in the bold;

Vertical bars (|) are used to separate optional and mutually exclusive options;

Square brackets "[]" indicate any option;

Braces "{}" indicates mandatory.

Cisco icon example

Cisco uses a set of standardized icons to represent devices in a network topology. The icons used in this book and ccna exams are as follows:

10 Mbps Hub	100mbps Hub	Bridge	L2 Switch
Hub	Wireless AP	Vro	Modem
PC	Server	Laptop	Multi-layer switch
Route Switch	Firewall	Wireless Router	Network Cloud
Wireless	Serial Line	Ethernet	Virtual circuit