了得網計算機/網絡_Internet技術基礎

編輯推薦

“在可讀性和清晰度方面，Douglas的表達力無出其右。本書的寫作風格直接而且重點突出。……本書是適合網絡初學者的一本優秀教材。”
——Raymond Hsieh，紐約州立大學布法羅分校
“本書以一種簡潔的語言向學生介紹了因特網，指出了關鍵所在及未來發展方向。”
——RobinPeek，西蒙斯學院

內容簡介

DouglasComer是著名的網絡技術作家、教師和顧問，他對因特網的概念和工作原理有其獨到的見解和清晰的認識。在本書的第4版中，Comer教授從一種非技術化的角度來解釋因特網後臺的工作機制、計算機的通信方式、服務器以及因特網技術的原理。作者借助實用的方法，以清晰易懂且科學準確的語言介紹了因特網的各種技術及其不同的應用，向讀者展示出網絡互連和因特網的全景圖。
本書主要特色
•三大新增章節：
NAT：介紹因特網的連接。
遠程安全接入（VPN）。
公司和個人網頁（Wiki及Blog）。
•關鍵網絡概念，如分組交換、局域網、協議軟件和域名。DouglasComer是著名的網絡技術作家、教師和顧問，他對因特網的概念和工作原理有其獨到的見解和清晰的認識。在本書的第4版中，Comer教授從一種非技術化的角度來解釋因特網後臺的工作機制、計算機的通信方式、服務器以及因特網技術的原理。作者借助實用的方法，以清晰易懂且科學準確的語言介紹了因特網的各種技術及其不同的應用，向讀者展示出網絡互連和因特網的全景圖。
本書主要特色
•三大新增章節：
NAT：介紹因特網的連接。
遠程安全接入（VPN）。
公司和個人網頁（Wiki及Blog）。
•關鍵網絡概念，如分組交換、局域網、協議軟件和域名。
•全新的內容，包括Wi-Fi的無線聯網技術、Web制作工具，以及關於網絡安全性的討論。
•包括電子商務的概述以及如何利用網絡進行業務和商業交易。
•采用更多易於理解的定義擴展了術語表的內容。

作者簡介

Douglas E. Comer Cisco公司研發副總裁，同時還是普度大學計算機科學繫教授。他曾是因特網體繫結構委員會的成員，該委員會確定因特網發展標準的權威結構；同時還是美國計算機學會的會員。除本書外，他還著有《TCP/IP網際互聯》（3卷本）、《計算機網絡和因特網》等。

Preface
Chapter 1 The Internet Has Arrived
The World Has Changed
Numbers Do Not Tell The Story
Learning About The Internet
Understanding The Big Picture
Terminology And Technology
Growth And Adaptability
The Impact Of The Internet
Organization Of The Book
A Personal Note
Chapter 2 Getting Started: Hands-On Experience
Introduction
The Web: Sites And PagesPreface
Chapter 1 The Internet Has Arrived
The World Has Changed
Numbers Do Not Tell The Story
Learning About The Internet
Understanding The Big Picture
Terminology And Technology
Growth And Adaptability
The Impact Of The Internet
Organization Of The Book
A Personal Note
Chapter 2 Getting Started: Hands-On Experience
Introduction
The Web: Sites And Pages
Web Browsers and Browsing
Using A Browser
Examples Of Web Sites And Services
Internet Search
Summary
Chapter 3 Telephones Everywhere
Introduction
A Communication Service
Selling Communication
Limited Access
High Cost
The Difficult Transition
Ubiquitous Access
Relevance To The Internet
Chapter 4 The World Was Once Analog
Introduction
Sound, Vibrations, And Analog Recording
Analog Electronic Devices
Many Electronic Devices Are Analog
The First Analog Communication
Analog Is Simple But Inaccurate
Sending An Analog Signal Across A Wire
Digital Music
The Digital Revolution
Computers Are Digital
Digital Recording
Using Digital To Recreate Analog
Why Digital Music?
Summary
Chapter 5 The Once And Future Digital Network
Introduction
The World Was Previously Digital
A Telegraph Is Digital
Morse Code
Letters And Digits In Morse Code
Users Did Not Encounter Morse Code
Virtually Instant Communication
Speed Is Relative
The Telephone Became Digital
Relevance To The Internet
Binary Encoding Of Data On The Internet
Why Use Two Symbols?
Summary
Chapter 6 Basic Communication
Introduction
Communication Using Electricity
Signals On Wires
Information Coding
Modems Allow Two-Way Traffic
A Character Code For Digital Information
Detecting Errors
Summary
Chapter 7 The Local Area Network Arrives
Introduction
Motivation
Interchangeable Media
A Computer Consists Of Circuit Boards
Circuit Boards Plug Into A Computer
Connecting One Computer To Another
LAN Technologies
Connecting A Computer To A LAN
The Importance Of LAN Technology
Relationship To The Internet
PART II A Brief History Of The Internet
Chapter 8 Internet: The Early Years
Many Independent Networks
The Proliferation Of LANs
Facts About LANs
LANs Are Incompatible
Wide Area Technologies Exist
Few WANs, Many LANs
WANs and LANs Are Incompatible
The Desirability Of A Single Network
The Department Of Defense Had Multiple Networks
Connecting Disconnected Machines
The Internet Emerges
The ARPANET Backbone
Internet Software
The Name Is TCP/IP
The Shock Of An Open System
Open Systems Are Necessary
TCP/IP Documentation Is Online
The Military Adopts TCP/IP
Summary
A Personal Note
Chapter 9 Two Decades Of Incredible Growth
Introduction
Disseminating The Software
Meanwhile, Back In Computer Science
The Internet Meets UNIX
The U.S. Military Makes A Commitment
The Internet Doubles In Size In One Year
Every Computer Science Department
Graduate Students Volunteer Their Time
The IAB evolves
The IETF
Doubling Again In A Year
The Internet Improves Science
NSF Takes A Leadership Role
Target: All Of Science And Engineering
NSF’s Approach
The NSFNET Backbone
The ANS Backbone
Exponential Growth
A Commercial Assessment
The End Of Growth
Chapter 10 The Global Internet
Introduction
Early ARPA Netwos
Electronic Mail Amng Computers
BITNET And FIDONET
Networks In Europe
EBONE: The Internet In Europe
Backbones And Internet Hierarchy
Internet On All Continents
The World Of Internet after 1998
A Personal Note
Chapter 11 A Global Information Infrastructure
Chapter 12 Packet Switching
Chapter 13 Internet: A Network Of Networks
Chapter 14 ISPs: Broadband And Wireless Access
Chapter 15 IP: Software To Create A Virtual Network
Chapter 16 TCP: Software For Reliable Communication
Chapter 17 Clients + Servers = Distributed Computing
Chapter 18 Names For Computers
Chapter 19 NAT: Sharing An Internet Connection
Chapter 20 Why The Internet Works Well
Chapter 21 Electronic Mail
Chapter 22 Bulletin Board Service (Newsgroups)
Chapter 23 Browsing The World Wide Web
Chapter 24 World Wide Web Documents (HTML)
Chapter 25 Advanced Web Technologies (Forms, Frames, Plugins, Java, JavaScript, Flash)
Chapter 26 Group And Personal Web Pages (Wikis And Blogs)
Chapter 27 Automated Web Search (Search Engines)
Chapter 28 Text, Audio, And Video Communication (IM, VoIP)
Chapter 29 Faxes, File Transfer, And File Sharing (FTP)
Chapter 30 Remote Login And Remote Desktops (TELNET)
Chapter 31 Facilities For Secure Communication
Chapter 32 Secure Access From A Distance (VPNs)
Chapter 33 Internet Economics And Electronic Commerce
Chapter 34 The Global Digital Library
Appendix 1 Glossary of Internet Terms
Index

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