| “经典原版书库”是响应教育部提出的使用原版国外教材的号召，为国内高校的计算机教学度身订造的。
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| Preface
Chapter 1 The Internet Has Arrived The World Is Changing Numbers Do Not Tell The Story Learning About The Internet Undersranding The Big Picture Terminology And Technology Growth And Adaptability The Impact of The Internet Organization OfThe Book A Personal Note Chapter 2 Getting Staned: Hande-On Experience Introduction The Web: Sites And Pages Web Browsers and Browsing Using A Browser Examples of Web Sites And Services Summary PART I Introduction To Networking Chapter 3 Telephones Everywhere Introduction A Communication Service Selling Communlcatlon Limited Access High Cost The Difficulr 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 Once 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 Dctecting 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 Iniportance Of LAN Technology Relationship To The Internet PART II A Brief History Of The Internet Chapter 8 Internet: The Early Yeare 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 Intermet Software The Name Is TCP/IP The Shock Of An Open System Open Systems Are Necessary TCP/IP Documentation Is Online The Militaty AdoptS TCP/IP Summary A Personal Note Chapter 9 Two Decades Of Inctedible Growth Introduction Disseminating The Software Meanwhile, Back In Computer Science The Internet Meets UNIX The U.S. Military Makes A Commionent 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 ,4 Leadership Role Target: AII 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 Networks Electronic Mail Among Computers BITNET And FIDONET Networks In Europe EBONE: The Internet In Europe Backbones And Internet Hierarchy Internet On All Continents The World Of lnternet after 1998 A Personal Note Chapter 11 A Global Information Infrastrueture Introduction Existing Infrastructure Communication Inpastructure The Internet Infrastructure The Internet Offers Diverse Informatiou Services TCP/IP Provides Commmlication Facilities A Personal Note PART III How The Internet Works Chapter 12 Paeket Switching Introduction Sharing Saves Money Sharing Introduces Delays Sharing Wires Selectable Channels Sharing By Taking Turns Packet Switching Avoids Delays Each Packct Must Be Labeled Computers Have Addresses Packets Are Not All The Same Size Packet Transmission Seems Instantaneous Sharing Is Automatic Network Hardware Handles Sharing Many Devices Can Use Packet Switching Relevance To The Internet Summary Chapter 13 Internet: A Network Of Networks Introduction Network Technologies Are Incompatible Coping With Incompatibility Two Fundamental Concepts Using A Computer To Interconnect Networks Interconnecting Computers Pass Packets Interconnecting Computers Are Called Routers Routers Are The Building Blocks of The Internet Routers Acconunadate Multiple Types Of Networks Routers Can Interconnect WAVs And LANs Interconnecting Networks Was Revolutionary Summary Chapter 14 ISPs And Network Conneetions Introduction Internet Service Providers And Fees Customer Connections Form The Last Mile Lased Circuits Are Exprensive Most Individuals Choose Dial-up Access The Important Concept of Continuous Connectivity Instantaneous Access Changes Use Newer Technologies Offer Inexpensive Dedicated Access Wireless Can Reach Everyone A Personal Note Chapter 15 IP: Software To Create A Virtual Network Introduction Protocol: An Agreement For Communication Basic Functionality: The Internet Protocol IP Software On Every Machine Internet Packets Are Called Datagrams The Illusion Of A Giant Network The Reality Of lnternal Structure Datagrams Travel In Packets Every Computer Is Assigned A Unique Address Internet Addresses An Odd IP Address Syntax IP Addresses Are Not Random An Example Trip Through The Internet Summary Chapter 16 TCP: Software Fer Rellable Communicatien Introduction A Packet Switching System Can Be Overrun TCP Helps IP Guarantee Delivery TCP Provides A Connection Between Computer Programs The Magic Of Recovering Last Datagrams TCP Retransmission Is Automatic TCP And IP Work Together Summary Chapter 17 Clients + Servere = Distributed Computing Introduction Large Computers Use Networks For Input And Output Small Computers Use Networks To Interact Distributed Computing On The Internet A Single Paradigm Explains AIl Distributed Computing Progrants Are Clients Or Servers A Server Must Always Run Summary Chapter 18 Names For Computers Introduction People Prefer Names To Numbers Naming A Computer Can Be Difficult Or Fun Computer Names Must Be Unique Suffixes On Compufer Names Names With Many Parts Domain Names Outside The US Translating A Name To An Equivalent IP Address Domain Name System Works Like Directory Assistance Computer Name Lookup Is Automatic IP Addresses And Domain Names Are Unrelated Summary Chapter 19 Why The Internet Worke Well Introduction The Internet Work Well IP Provides Flexibility TCP Provides Reliability TCP/IP Software Was Engineered For Efficiency TCP/IP Research Emphasized Practical Results The Formula For Success Summary PART IV Services Available On The Internet Chapter 20 Electronie Mail Introduction Description Of Functionality The Best Of All Worlds Each User Has A Mailbox For E-mail Sending An E-mail Message Notification That E-mail has Arrived Reading An E-mail Message E-mail Messages Look Like Interoffice Memos E-mail Software Fills In Header Information How E-mail Works Using E-mail From A Personal Computer Mailbox Address Format Abbreviations Make E-mail Friendly Aliases Permit Arbitrary Abbreviations Aliases Shared By All Users Of A Computer System Sending To Multiple Recipients Mailing List: An Alias for Multiple Recipients Public Mailing Lists And Mail Exploders E-mail To And From Non-Internet Sites Access To Services Via E-mail Speed, Reliability, And Expectations Impact And Significance OIP Electronic Mail Joining A Mailing List Chapter 21 Bulletin Board Serviee (Network News) Introduction Description of Functionalify Many Bulletin Boards With Diverse Topics Network News Newsgroup Names Obtaining Network News And The Software To Read Articles How Network News Appears To A User Checking For News Articles Article Expiration Reading Network News Selecting Articles Subscribing And Unsubscribing To Newsgroups Submitting An Aricle Moderated Newgroups Size Of Network News How Network News Works Redundant Newsfeeds And Duplicate Elimination Relationship Between Netnews And Electronic Mail Impact And Significance Of Network News And Mailing Lists Hints And Conventions For Participating In Discussions Summary Chapter 22 Browsing The World Wide Web Introduction Description Of Functionality Browsing Vs.Information Retrieval Early Browsing Services Used Menus A Menu Item Can Point To Another Computer How A Browser Works An Example Point-And-Click Interface Combining Menu Items With Text The Importance Of Integrated Menus Menus Embedded In Text Are Called Hypertext Multimedia Video And Audio References Can Be Embedded In Text The World Wide Web Browser Software Used To Access The Web An Example Hypermedia Display Control Of The Browser External References Recording The Location Of Information Bookmarks How The World Wide Web Works A URL Tells A Browser Which Computer To Contact A URL Tells A Browser Which Server To Contact Use Of The Name WWW In URLs A Browser Provides Access To Multiple Services Inside A Browser Program Summary An Observation About Hypermedia Browsing Chapter 23 World Wide Web Documents(HTML) Introduction Display Hardware Varies A Browser Translates And Displays A Web Document A consequence Of The Web Approach HTML,The Language Used For Web Documents Instructions In A Web Page Control The Output A Web Page Is divided Into Two Main Sections Indentation Can Make HTML Readable The Body Of A Web Page Can Contain Text Indentation Can Make Paragraphs Easier To Find A Web Page Can Link To Another Page HTML Allows Numbered And Unnumbered Lists Images On A Web Page Are Digital HTML Allows A Web Page To Include An Image Text Can Appear Adjacent To An Image Images Can Link To Another Web Pages Some Browsers Can Stretch Or Shrink Images The Background Can Be Controlled Other Features Of HTML Importance Of HTML GUI Tools Help With Web Page Creation Summary Chapter 24 Advanced Web Technologies(Forms,Frames,Plugins,CGI,Java,JavaScript) Introduction Conventional Web Pages Are Static How A Server Stores Static Web Pages Fetching Items One At A Time Conventional Web Pages Use The Entire Screen A Web Page Can Change Part Of the Screen The Web,Advertising,And Frames Static Documents Have Disadvantages Controlling How A Browser Processes Data Plugins Allow Variety A Server Can compute A Web Page On Demand How CGI Works Professional Programmers Build CGI Programs Personalized Web Pages Personalized Advertisements Web Pages Can Interact Shopping Carts Cookies Should You Accept Cookies? A Web Page Can Display Simple Animations Active Documents Are More Powerful Java Is An Active Document Technology JavaScript Is An Active Document Technology The Importance Of Advanced Web Technologies Chapter 25 Automated Web Search(Search Engines) Introduction Description Of Functionality Browsing Vs.Automated Searching A Search Engine Helps Users Get Started A Search Tool Can help Recover From Loss Automated Searching By Name How An Automated Search Service Operates Modern Systems Search Web Page contents How A Web Search Appears To A User How A Search Engine Returns Results Automated Search Services Use String Matching The Advantages And Disadvantages Of String Matching Advanced Search Programs That Use Multiple Keys Advanced Services Offer More Sophisticated Matching Personalized Search Results How An Automated Content Search Works Searches Are Restricted Advertising Pays For Searching Examples Of Automated Search Services Significance Of Automated Web Search Chapter 26 Audio And Video Communication Introduction Description Of Functioinality Audio And Video Require Special Hardware An Audio clip Resembles An Audio CD Real-Time Means No Delay Internet Audio In Real-Time Radio Programs On The Internet Real-Time Transmission Is Called Webcasting Internet Telephone Service Is Possible Audio Teleconferencing A Cooperative Document Markup Service Marking a Document The Participants Discuss And Mark A Document Video Teleconferencing Video Teleconference Among Groups Of People A Combined Audio,Video,And Whiteboard Service Summary A Personal Note Chapter 27 Faxes And Files(FTP) Introduction Sending A Fax The Internet Can Be Used To Copy Files Data Stored In Files Copying A File FTP Is Interactive Example FTP Commands A User Can Store Or Retrieve A File Commands For Binary And Text File Format Choosing ASCII or Binary Transfer Commands For Authorization And Anonymous FTP A Browser Can Use FTP How FTP Works Impact And Significance Of FTP Summary Chapter 28 Remote Login And Remote Desktops(TELNET) Introduction Early computers Used Textual Interfaces A Timesharing System Requires User Identification Remote Login Resembles Conventional Login How Remote Login Works Escaping From Remote Login Displays And Windows The Internet Remote Login Standard Is TELNET Remote Access Can Display A Desktop How Remote Desktops Operate Assessment Of Remote Login And Desktops Remote Access Is General Generality Makes Remote Login And Desktops Powerful Remote Access Accommodates Multiple Types Of Computers Unexpected Results From Remote Access Summay Chapter 29 Facilities For Secure Communication Introduction The Internet Is Unsecure Lack Of Security Can Be Important Authentication And Privacy Are Primary Problems Data May Be Changed Encoding Keeps Messages Private Computer Encryption Uses Mathematics No Network Is Absolutely Secure Encryption Makes E-mail Private Encryption Software Needs A Key Two Keys Means never Having To Trust Anyone Secure E-Mail In Practice Summary Chapter 30 Electronic Commerce And Business Introduction E-Commerce Is Big Business Security Made E-Commerce Possible Secure Sockets Public Key Encryption Provides Authenticity Digital Signatures Certificates Contain Public Keys What Is Digital Money? Digital Cash Is Not Widely Available Business And E-Commerce A Business Must Protect Its networks Firewalls Protect Networks A Firewall Filters Packets Firewalls Guard Against Trojan Horses Chapter 31 The Global Digital Library Introduction A Cornucopia Of Services New Services Appear Regularly Flexibility Permits Change A Digital Library Card Catalogs And Search Tools Internet Services Can Be Integrated Mr.Dewey,Where Are You? Information In The Digital Library What Is The Internet? A Personal Note Appendix 1 Example Netnews Newsgroups Appendix 2 Glossary Of Internet Terms Index |
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