Douglas Comer， best-selling networking author， teacher， and consultant， provides a unique and understandable overview ofnot only how to use the Internet but how it works. In the Third Edition of The I
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 a 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 19 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
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