Cisco CCNA认证考试全攻略： Todd Lammle权威指南

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"CCNA_学习指南" 《CCNA学习指南》是一本专门为准备参加CCNA（Cisco Certified Network Associate）#640-801或640-802考试的考生设计的专业教材。该书由 Todd Lammle撰写，他被CertCities评为“最佳学习指南作者”。这本书不仅适用于备考的学员，还适合Cisco网络工程师和技术销售人员以及大专院校的计算机通信专业师生使用。本书的特点包括但不限于： 1. 实际场景：书中包含真实世界情境，使学习者能够在模拟实际工作环境中理解和应用理论知识。 2. 实验与书面实验室：通过动手操作和书面练习，帮助读者巩固理论知识，提升实践技能。 3. 先进的考试软件：提供定制化的测试引擎，包含数百个样例问题，以模拟真实考试环境。 4. 视频和音频指导：Todd Lammle亲自录制的视频和音频教程，提供直观的教学体验。 5. 电子闪卡：方便考生随时随地复习关键术语和概念。 6. 术语词汇表PDF：提供详细的网络术语词汇表，便于查阅和学习。 7. 奖励内容：附赠CCNA模拟实践指南电子书，进一步加强实践能力的训练。在内容上，本书分为多个章节，涵盖以下核心知识点： - 第1章：互联网基础，介绍互联网的基本概念和模型，如OSI参考模型，以及对考试的重要性的总结。 - 第2章：以太网网络和数据封装，回顾以太网网络的类型、电缆、数据封装过程，并讲解Cisco三层层次化模型。每个章节后都有评估测试、书面实验室、复习问题和答案，帮助读者自我检查和深化理解。例如，第1章涉及了互联网的基本原理和模型，而第2章则重点复习了以太网技术和数据封装，这些都是网络工程师必须掌握的基础知识。通过全面的学习和实践，读者可以系统地掌握网络基础、协议、设备配置等CCNA考试的关键内容，从而提高通过考试的可能性，并为将来在Cisco网络领域的工作打下坚实的基础。

Chapter 14 covers wireless technologies. This is an introductory chapter regarding wireless technologies as Cisco views wireless. However,

I also added some advanced wireless topics that cover Cisco’s newest gear. At this time, advanced wireless gear is not covered within the

Cisco CCNA objectives, but that can change. Make sure you understand basic wireless technologies like access points and clients as well

as the difference between 802.11a, b, and g.

Chapter 15 covers IPv6. This is a fun chapter and has some great information. IPv6 is not the big, bad scary monster that most people think it

is. IPv6 is an objective on the latest exam, so study this chapter carefully. Keep an eye out at www.lammle.com for late-breaking updates.

Chapter 16 concentrates on Cisco wide area network (WAN) protocols. This chapter covers HDLC, PPP, and Frame Relay in depth. VPNs

and IPSec are also covered in this chapter. You must be proficient in all these protocols to be successful on the CCNA exam. Do not skip the

written lab, review questions, or hands-on labs found in this chapter.

How to Use This Book

If you want a solid foundation for the serious effort of preparing for the Cisco Certified Network Associate (CCNA Composite) 640-802 exam, then

look no further. I have spent hundreds of hours putting together this book with the sole intention of helping you to pass the CCNA exam and learn

how to configure Cisco routers and switches.

This book is loaded with valuable information, and you will get the most out of your studying time if you understand how I put the book together.

To best benefit from this book, I recommend the following study method:

1. Take the assessment test immediately following this introduction. (The answers are at the end of the test.) It’s okay if you don’t know any

of the answers; that’s why you bought this book! Carefully read over the explanations for any question you get wrong and note the chapters

in which the material is covered. This information should help you plan your study strategy.

2. Study each chapter carefully, making sure you fully understand the information and the test objectives listed at the beginning of each

one. Pay extra-close attention to any chapter that includes material covered in questions you missed.

3. Complete the written labs at the end of each chapter. Do not skip these written exercises, because they directly relate to the CCNA

exam and what you must glean from the chapters in which they appear. Do not just skim these labs! Make sure you understand completely

the reason for each answer.

4. Complete all hands-on labs in the chapter, referring to the text of the chapter so that you understand the reason for each step you take.

Try to get your hands on some real equipment, but if you don’t have Cisco equipment available, try to find Cisco’s Packet Tracer for a

router simulator that you can use for all the hands-on labs needed for all your Cisco certification needs.

5. Answer all of the review questions related to each chapter. (The answers appear at the end of the chapters.) Note the questions that

confuse you and study the topics they cover again. Do not just skim these questions! Make sure you understand completely the reason for

each answer. Remember that these will not be the exact questions you find on the exam; they are written to help you understand the

chapter material.

6. Try your hand at the practice exams that are included on the companion CD. The questions in these exams appear only on the CD.

Check out www.lammle.com

for more Cisco exam prep questions.

7. Also on the companion CD is the first module from each of the first three CDs from my complete CCNA video series, which covers

internetworking, TCP/IP, and subnetting. This is critical information for the CCNA exam. In addition, as an added bonus, I have included

an audio section from my CCNA audio program. Do not skip the video and audio section!

Please understand that these are preview editions of the video and audios found at www.lammlepress.com and not the full versions, but are still a great value,

chock full of information.

8. Test yourself using all the flashcards on the CD. These are brand-new and updated flashcard programs to help you prepare for the

CCNA exam. They are a great study tool!

To learn every bit of the material covered in this book, you’ll have to apply yourself regularly, and with discipline. Try to set aside the same time

period every day to study, and select a comfortable and quiet place to do so. If you work hard, you will be surprised at how quickly you learn this

material.

If you follow these steps and really study—doing hands-on labs every single day—in addition to using the review questions, the practice exams,

the Todd Lammle video/audio sections, and the electronic flashcards, as well as all the written labs, it would be hard to fail the CCNA exam.

However, studying for the CCNA exam is like trying to get in shape—and if you do not go to the gym every day, you won’t get in shape.

What’s on the CD?

The folks at Sybex and I worked hard to provide some really great tools to help you with your certification process. All of the following tools should

be loaded on your workstation when you’re studying for the test. As a fantastic bonus, I was able to add to the CD included with this book a preview

section from both my CCNA video and audio series! Please understand that these are not the full versions, but they are still a great value for you

included free with this book.

The Sybex Test Preparation Software

The test preparation software prepares you to pass the CCNA exam. In the test engine, you will find all the review and assessment questions from

the book plus two practice exams with 140 questions that appear exclusively on the CD.

Electronic Flashcards

To prepare for the exam, you can read this book, study the review questions at the end of each chapter, and work through the practice exams

included in the book and on the companion CD. But wait, there’s more! You can also test yourself with the 200 flashcards included on the CD. If you

can get through these difficult questions and understand the answers, you’ll know you’re ready for the CCNA exam.

The CD includes 200 flashcards specifically written to hit you hard and make sure you are ready for the exam. With the review questions, practice

exams, and flashcards on the CD, you’ll be more than prepared for the exam.

Bonus Material

The bonus material, found only on the CD, has a wealth of information that covers SDM and CC, recognizing and mitigating security threats, route

authentication, layer-3 switching and switching types,and lastly, and probably the most valuable to you as a study tool, is the CCNA Simulation

Exam Practice Labs. Do not skip this bonus material when studying for the CCNA exam. Please see my web site and forum at www.lammle.com

for free up-to-the minute updates and new bonus material.

Todd Lammle Videos

I have created a full CCNA series of videos that can be purchased in either DVD or downloadable format from www.lammlepress.com. However,

as a bonus included with this book, the first module of this series is included on the CD as a “Preview.” Although this isn’t the full version, the video

is over 1 hour of foundational CCNA information. This is a $149 value! Do not skip this video because it covers the internetworking objectives,

TCP/IP, and subnetting, which are very important to the CCNA exam.

Todd Lammle Audio

In addition to the videos included for free on the CD, I have included a “preview” section from my CCNA audio series. The CCNA audio series is a

$199 value! This is a great tool to add to your arsenal of study material to help you pass the CCNA exam.

To find more Todd Lammle videos and audios as well as other Cisco study material, please see www.lammlepress.com.

Where Do You Take the Exams?

You may take the CCNA Composite exam at any of the Pearson VUE authorized testing centers (www.vue.com) or call 877-404-EXAM (3926).

To register for a Cisco Certified Network Associate exam, follow these steps:

1. Determine the number of the exam you want to take. (The CCNA exam number is 640-802.)

2. Register with the nearest Pearson VUE testing center. At this point, you will be asked to pay in advance for the exam. At the time of this

writing, the exam is $250 and must be taken within one year of payment. You can schedule exams up to six weeks in advance or as late

as the day you want to take it—but if you fail a Cisco exam, you must wait five days before you will be allowed to retake it. If something

comes up and you need to cancel or reschedule your exam appointment, contact Pearson VUE at least 24 hours in advance.

3. When you schedule the exam, you’ll get instructions regarding all appointment and cancellation procedures, the ID requirements, and

information about the testing-center location.

Tips for Taking Your CCNA Exam

The CCNA Composite exam test contains about 55 to 60 questions and must be completed in 75 to 90 minutes or less. This information can

change per exam. You must get a score of about 85 percent to pass this exam, but again, each exam can be different.

Many questions on the exam have answer choices that at first glance look identical—especially the syntax questions! Remember to read through

the choices carefully because close doesn’t cut it. If you get commands in the wrong order or forget one measly character, you’ll get the question

wrong. So, to practice, do the hands-on exercises at the end of this book’s chapters over and over again until they feel natural to you.

Also, never forget that the right answer is the Cisco answer. In many cases, more than one appropriate answer is presented, but the correct

answer is the one that Cisco recommends. On the exam, it always tells you to pick one, two, or three, never “choose all that apply.” The CCNA

Composite exam may include the following test formats:

Multiple-choice single answer

Multiple-choice multiple answer

Drag-and-drop

Fill-in-the-blank

Router simulations

Cisco proctored exams will not show the steps to follow in completing a router interface configuration; however, they do allow partial command

responses. For example, show config or sho config or sh conf would be acceptable. Router#show ip protocol or router#show ip prot would be acceptable.

Here are some general tips for exam success:

Arrive early at the exam center so you can relax and review your study materials.

Read the questions carefully. Don’t jump to conclusions. Make sure you’re clear about exactly what each question asks. Read twice, answer

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