Tài liệu Using Your Sybex Electronic Book Microsoft® .NET Framework pptx

To ensure industry-wide support, it is sponsored by many IT industry leaders, including: Association of Internet Professionals IBM Microsoft NovellThe i-Net+ exam was designed to tes

If you are like the rest of the networking community, you’ve probably taken certification exams Becoming certified is one of the best things you can do for your career in the computer or networking field It proves that you are knowledgeable in the area in which you are certified

In this book, you’ll find out what the i-Net+ exam is all about Each ter covers part of the exam, and at the end of each chapter, there are review questions to help you prepare for the exam

chap-What Is the i-Net+ Certification?

i-Net+ is a certification developed by the Computing Technology Industry Association (CompTIA) This organization exists to provide resources and education for the computer and technology community This is the same body that developed the A+ and Network+ exams for computer and network-ing technicians In 1997, members of CompTIA convened to develop a new certification that tests skills for Internet professionals To ensure industry-wide support, it is sponsored by many IT industry leaders, including:

Association of Internet Professionals

IBM

Microsoft

NovellThe i-Net+ exam was designed to test the skills of Internet professionals who are responsible for implementing and maintaining Internet, intranet, and extranet infrastructure and services as well as development of related applications

The exam tests areas of Internet technologies such as the TCP/IP protocol, the various types of servers, and the concepts of Internet design and imple-mentation, such as which items are required for an easy-to-read Web site and the prerequisites for its installation In addition, it covers troubleshooting concepts and various how-tos

xx Introduction

Why Become i-Net+ Certified?

As this book is being written, the i-Net+ certification is brand-new But i-Net+ is the next certification in a line of CompTIA certifications, starting with A+ certification and Network+ certification Because CompTIA is a well-respected developer of industry vendor-neutral certifications, getting i-Net+ certified indicates that you are competent in the specific areas tested

by the exam

Two major benefits are associated with becoming i-Net+ certified:

Proof of professional achievement

Opportunity for advancement

Proof of Professional Achievement

Networking professionals are competing these days to see who can get the most certifications And technicians want the i-Net+ certification because it

is broad, covering the entire field of Internet-related technical knowledge, rather than only development or security, for example Thus, it can be a challenge to prepare for the i-Net+ exam Passing the exam, however, cer-tifies that you have achieved a certain level of knowledge about vendor-independent Internet-related subjects

Opportunity for Advancement

We all like to get ahead in our careers With advancement comes more responsibility, to be sure, but usually it means more money and greater opportunities In the information technology area, this can usually be accomplished by obtaining multiple technology certifications, including i-Net+

i-Net+, because of its wide-reaching industry support, is recognized as a baseline of Internet and networking information Some companies will spec-ify that i-Net+ certification will result in a pay raise at review time And some companies will specify that i-Net+ certification, in conjunction with A+ Cer-tification, is required as a condition of employment before an employee’s next review

Introduction xxi

How to Become i-Net+ Certified

The simplest way to find out how to become i-Net+ certified is to take the exam It is administered by Sylvan Prometric, with which most of you are familiar if you have taken any other computer certification exams It is administered by computer To register to take the exam, call Sylvan (not the testing center) at 877-803-6867 and tell them you want to take the i-Net+ exam You must pay for the exam at registration time with a major credit card (for example, Visa or MasterCard) The cost is $135 for CompTIA members and $185 for non-members Special incentive pricing may be in effect when you take the exam—check CompTIA’s Web site for details

You can also register on the Internet through Sylvan Prometric at www.sylvanprometric.com or www.2test.com.

The exam itself consists of approximately 75 questions You have 1 hour and 30 minutes for the test At the end of the exam, your score report will be displayed on screen and printed so that you have a hard copy

Who Should Buy This Book?

If you are one of the many people who want to pass the i-Net+ exam, you should buy this book and use it to study for the exam The i-Net+ exam is designed for Internet professionals with six months of experience in a variety

of entry-level, Internet-related technical job functions This book was ten with one goal in mind: to prepare you to pass the i-Net+ exam by describ-ing in detail the concepts on which you’ll be tested

writ-How to Use This Book and CD

This book includes several features that will make studying for the i-Net+ exam easier First, at the beginning of the book (right after this introduction,

in fact) is an assessment test you can use to check your readiness for the actual exam Take this test before you start reading the book It will help you

to determine the areas you may need to “brush up” on You can then focus

on those areas while reading the book The answers to this test appear on a separate page after the last question Each answer also includes an explana-tion and a note telling you in which chapter this material appears

xxii Introduction

In addition, there are review questions at the end of each chapter As you finish each chapter, answer the questions and then check your answers, which will appear on the page after the last question If you answered any question(s) incorrectly, you’ll know that you may need some additional study in that particular area of the exam You can go back and reread the section in the chapter that deals with each question you got wrong to ensure that you “know your stuff.”

Appendix A includes a practice exam Take this exam when you have ished reading all the chapters and answering all the review questions and you feel you are ready for the i-Net+ exam Take the practice exam as if you were actually taking the i-Net+ exam (i.e., without any reference material) The answers to the practice exam can be found at the end of the test on the last page of Appendix A If you get more than 90 percent of the answers correct, you’re ready to go ahead and take the real exam

fin-On the CD-ROM that is included with this book, there are several

“extras” you can use to bolster your exam “readiness”:

Electronic “flashcards” You can use these 150 flashcard-style questions

to review your knowledge of i-Net+ concepts on your PC Additionally, you can download the questions into your Palm device (if you own one) for reviewing anywhere, anytime, without a PC!

Test engine This portion of the CD-ROM includes all of the questions that appear in the text of this book: the assessment questions at the end of this introduction, the chapter review questions, and the Practice Exam questions from Appendix A In addition, it includes a set of bonus ques-tions that only appear on the CD-ROM The book questions will appear similarly to the way they did in the book, and they will also be random-ized This random test will allow you to pick a certain number of ques-tions and will simulate an actual exam Combined, these test engine elements will allow you to test your readiness for the “real” i-Net+ exam

Full text of the book If you are going to travel but still need to study for the i-Net+ exam, and you have a laptop with a CD-ROM drive, you can take this entire book with you on the CD-ROM The book is in PDF (Adobe Acrobat) format so it can be read easily on any computer

Introduction xxiii

Conventions Used in This Book

To understand the way this book is put together, you must learn about a few

of the special conventions we used Following are some of the items you will commonly see

Italicized words indicate new terms After each italicized term, you will find a definition

Lines formatted in this font refer to the output of a program You will usually see several of these lines together indicating what the output of a text-based program usually looks like This font is also used in Web addresses

Tips will be formatted like so A tip is a special piece of information that can make either your work or your test-taking experience easier.

Notes are formatted with this symbol and this box When you see a note, it ally indicates some special circumstance to make note of Notes usually include information that is somewhat out of the ordinary and relates to the exam.

usu-Warnings are found within the text whenever there is a technical situation that arises that may cause damage to a component or cause a system failure of some kind Additionally, warnings are placed in the text to call particular attention to a potentially dangerous situation

Keep a watchful eye out for these special items within the text as you read

Sidebars

This special formatting indicates a sidebar Sidebars are entire paragraphs

of information that, although related to the topic being discussed, aren’t actually on the exam They are just what their name suggests: a sidebar discussion

xxiv Introduction

Exam Objectives

The i-Net+ exam objectives were developed by a group of Internet industry professionals through the use of an industry-wide job task analysis Comp-TIA asked groups of Internet professionals to fill out a survey rating the skills they felt were important in their jobs The results were grouped into objec-tives for the exam This section includes the outline of the exam objectives for the i-Net+ exam and the weight of each objective category

The objectives and weighting percentages given in this section can change at any time Check CompTIA’s Web site at www.comptia.org for a list of the most current objectives.

Files taking too long to load

Inability to open files

Resolution of graphics

Cleaning out client-side cache

Server may cache information as well

Web page update settings in browsers

1.4 Describe different types of search indexes—static index/site map, keyword index, full-text index Examples could include the following:

Searching your site

When you would use each

The basic commands you would use (e.g., put and get) with each client (e.g., FTP, Telnet)

Whether a client can understand various e-mail types (MIME, HTML, uuencode)

The need to define MIME file types for special download dures such as unusual documents or graphic formats

proce-2.5 Identify problems related to legacy clients (e.g., TCP/IP sockets and their implication on the operating system) Content could include the following:

Checking revision date, manufacturer/vendor

Troubleshooting and performance issues

Compatibility issues

Version of the Web browser 2.6 Explain the function of patches and updates to client software and associated problems Content could include the following:

Setting a cookie without the knowledge of the user

Automatically accepting cookies versus query

Introduction xxvii

Remembering everything the user has done

Security and privacy implications

Development (20%)

3.1 Define programming-related terms as they relate to Internet

appli-cations development Content could include the following:

API

CGI

SQL

SAPI

DLL—dynamic linking and static linking

Client and server-side scripting

3.2 Describe the differences between popular client-side and

server-side programming languages Examples could include the following:

Content could include the following:

When to use the languages

When they are executed

Coding simple tables, headings, forms

Compatibility between different browsers

Difference between text editors and GUI editors

Importance of creating cross-browser coding in your HTML3.6 Identify popular multimedia extensions or plug-ins Examples could include the following:

Checking hot links

Testing different browsers

Testing to ensure it does not corrupt your e-commerce site

Load testing

Access to the site

Testing with various speed connections

Networking (25%)

4.1 Describe the core components of the current Internet ture and how they relate to each other Content may include the following:

infrastruc-
Network access points

Role of root domain server

Top level or original domains—edu, com, mil, net, gov, org

Country level domains—UK 4.4 Describe the nature, purpose, and operational essentials of TCP/IP Content could include the following:

What addresses are and their classifications (A, B, C, D)

Determining which ones are valid and which ones are not (subnet masks)

Public versus private IP addresses 4.5 Describe the purpose of remote access protocols Content could include the following:

SLIP

PPP

PPTP

Point-to-point/multipoint 4.6 Describe how various protocols or services apply to the function

of a mail system, Web system, and file transfer system Content could include the following:

Network interface card

Various types of modems including analog, ISDN, DSL, and cable

Modem setup and commands

Access control: Access Control List, firewall, packet filters, proxy

Introduction xxxiii

Authentication: Certificates, digital signatures, nonrepudiation

Encryption: public and private keys, Secure SocketsLayer (SSL), S/MIME, digital signatures, global versus country-specific encryp-tion standards

Auditing: Intrusion detection utilities, log files, auditing logs

SET (Secure Electronic Transactions)

5.2 Describe VPN and what it does Content could include the

following:

VPN in encrypted communications

Connecting two different company sites via an Internet VPN (extranet)

Connecting a remote user to a site

5.3 Describe various types of suspicious activities Examples could include the following:

Multiple login failures

Denial of service attacks

File-level access: read, write, no access

5.5 Describe the purpose of antivirus software and when to use it Content could include the following:

Browser/client

Server

How to license copyright materials

Scope of your copyright

How to copyright your material anywhere

Consequences of not being aware of copyright issues and not lowing copyright restrictions

fol-6.2 Identify the issues related to working in a global environment Content could include the following:

Working in a multivendor environment with different currencies, etc

International issues—shipping, supply chain

Multilingual or multicharacter issues (Unicode)

Legal and regulatory issues 6.3 Define the following Web-related mechanisms for audience devel-opment (i.e., attracting and retaining an audience):

Push technology

Pull technology 6.4 Describe the differences between the following from a business standpoint:

Intranet

Extranet

Internet

How to Contact the Authors

If you have any questions while you are reading this book, feel free to contact any of the authors David Groth can be reached via e-mail (the best way to reach him) at dgroth@corpcomm.net Michael de Beer can be reached at madebeer@igc.org, and David Wall can be reached at david@davidwall.com

Test-Taking Tips

The i-Net+ exam is a new standard (as this book is being written) and should gain wide acceptance among Internet professionals Remember a few things when taking your test:

Get a good night’s sleep the night before

Take your time on each question Don’t rush it

Arrive at the testing center a few minutes early so that you can review your notes

Answer all questions, even if you don’t know the answer swered questions are considered wrong.)