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1、5湖南软件职业学院专业英语(论文)湖南软件职业学院专业英语论文HunansoftwarevocationalcollegeprofessionalEnglishpapers专业名称:电子工程技术指导老师:林娟毕业生姓名:李小林毕业生学号:20081070220论文提交日期:2010年12月THEINTERNETAbstractWhatistheInternet?Wherediditcomefrom,andhowdiditsupportthegrowthoftheWorldWideWeb?WhataretheInternet’15湖南软件职业学院专业英语(论文)smostimp
2、ortantoperatingprinciples?TheInternetisaninterconnectednetworkofthousandsofnetworksandmillionsofcomputers(sometimescalledhostcomputersorjusthosts)linkingbusinesses,educationalinstitutions,governmentagencies,andindividualstogether.TheInternetprovidesaround400millionpeoplearoundtheworld(andov
3、er170millionpeopleintheUnitedStates)withservicessuchase-mail,newsgroups,shopping,research,instantmessaging,music,videos,andnews.NooneorganizationcontrolstheInternetorhowitfunctions,norisitownedbyanybody,yetithasprovidedtheinfrastructureforatransformationincommerce,scientificresearch,andcult
4、ure.Wordkey:InternetoperatingprinciplesTEXTThewordInternetisderivedfromthewordinternetworkortheconnectingtogetheroftwoormorecomputernetworks.TheWorldWideWeb,orWebforshort,isoneoftheInternet’smostpopularservices,providingaccesstooveronebillionWebpages,whicharedocumentscreatedinaprogrammingl
5、anguagecalledHTMLandwhichcancontaintext,graphics,audio,video,andother15湖南软件职业学院专业英语(论文)objects,aswellas“hyperlinks”thatpermitausertojumpeasilyfromonepagetoanother.InternetI—today’sInternet—hasevolvedoverthelastfortyyears.Inthissense,theInternetisnot“new”;itdidnothappenyesterday.Althoughjour
6、nalistsandpunditstalkgliblyabout“Internet”time—suggestingafast-paced,nearlyinstant,worldwideglobalchangemechanism,infact,ithastakenfortyyearsofhardworktoarriveattoday’sInternet.ThehistoryoftheInternetcanbesegmentedintothreephases.Inthefirstphase,theInnovationPhase,from1961to1974,thefundamen
7、talbuildingblocksoftheInternetwereconceptualizedandthenrealizedinactualhardwareandsoftware.Thebasicbuildingblocksare:packet-switchinghardware,client/servercomputing,andacommunicationsprotocolcalledTCP/IP(alldescribedmorefullybelow).Theoriginalpurposeofth