外文翻译--网络通讯软件的发展趋势简析.doc -- 5 元

DevelopmenttrendbriefanalysisofthenetworkcommunicationsoftwareAlongwiththedevelopmentoftheinformationsciencetechnologyrapidly,thehumanitywillfacethenewtechnologies,newconceptsoneafteranotherincessantlyatanytime.Thedevelopmentofthecomputertechnology,theelectronicsindustry,thenetworkcommunicationandthetransmissiontechnologyapace,madethetimelycommunicationgreatprogressatsomefields,andtheC/Sstructureastherepresentative.TheClientServerC/Stechnologyevolvesfromthehostcomputertechnologywhichthesingleprocessorsystemgeneratesnaturally,whichmaytracetothecomputerorigin.Inthehostcomputertechnology,datainsystemprocessingandthemanagementisallcompletedinthecentral.Thehostcomputerisrevolvingbythesomeperipherycustomerterminalswhichmerelysimplysupportinformationperformance.IntheperiodoftheClientServertechnology,theclientcomputerbecomestheimportantprocessingresources.Theclientsystemprocessingspeedrisesunceasinglyduringthepersonalcomputerrevolution.Nowitsprocessingspeedmightcomparebeautywiththesmallmachineandthelargescalemachinerybefore,evenhadsurpassedthem.Atfirstinordertosupportthedepartmentandenterprisesdataaccessing,theClientServertechnicalhassupportedtoconnectthroughthelocalareanetworkLANtotherearendlargescalemachinery,thesmallmachineandtheworkstationserversystem.ThetechnologywhichSupportsthiskindofcommunicationinthesoftwareleveliscalledasthemiddleware.Atfirst,themiddlewareisinstalledtosupporttheClientServernetworkcommunicationconventionalabilitybetweenthePCandtheserverplatform.Alongwiththetechnicaldevelopment,themiddlewareisembeddedintheoperatingsystemgradually,soitbecameonekindofordinaryabilityintheclientplatformandtheserverplatform.Theclientsystemwhichthemiddlewarehasbeenembeddedinsupportstotheapplicationprocedureservicewhichareoperatedthroughthelocalandthenetworknow.TheevolvementfromtheClientServertechnologytotheembeddedabilityincreasesafewchallengesfortheapplicationsystemexecution.RecentlytheClientServertechnologyisbeingreplacedgraduallybytheNtierObjectOrientedsolution.TheNtiersolutionBasedontheJavaapplicationprocedureserverhascontainedtosupportthethinclientterminaluserinterface,strengthenedtheexpandabilityandthereliabilityatthesametime.NowtheinterconnectionnetworkismostlybasedonIPv4protocol.ThesuccessoftheprotocolhasfacilitatedtheInternetrapiddevelopment.But,alongwiththeInternetuserquantityisincreasingunceasinglyandtheapplicationrequestoftheInternetisenhancing,thewantoftheIPv4isappearinggradually.MostincisivequestionisthegrowinghugedemandoftheInternetresourcesandtheomenoftheinsufficientIPv4addressspace.AtpresenttheIPv4addresshasalreadyassignedabout70.AmongitBkindofaddressalreadyisexhausted.AccordingtotheIETFforecast,theIPV4addressresourceswillbeexhaustedin20052010year.Moreover,becausetheIPv4addressplancannotsupporttheaddressgatheringcommendably,theexistingInternetisfacingthepressurewhichtheroutetableinflatesunceasingly.Atthesametime,thedemandsoftheservicequality,mobilityandsecurityandsoonareallurgenttodevelopthenewgenerationofIPprotocols.InordertosettleInternetaddresscrisisdrastically,IETFhas128bitaddressestheIPv6Internetprotocolinthemiddleof1990searly,andhascarriedonthefurtherstandardizedworkin1998.Besidesaddressspaceexpansion,IETFmadethedefinitiontotheIPv6addressstructure.IETFassigntheaddresswhichadoptstheCIDRmethodintheIPv4similarly.IPv6hasalsoprovidedthenewcharacteristictosupporttheautomaticdisposition,themobilityandthesecurityandsoonbetter.Atpresent,themainprotocolsoftheIPv6hasmaturedalreadyandhasformedtheRFCtext,italreadyobtainedtheworldconsistentapprovalastheonlysubstituteoftheIPv4.ThebigcommunicationfacilitymerchantsoverseasallinvestedthemassiveresourcesintheIPv6applicationandresearch,anddevelopedtherelevantsoftwareandhardware.Calledthenetworkfileserver,oneofthemostsuccessfulnetworktechnologies,comesfromtheSunMicrosystemsCo.TheSunMicrosystemsCo.hasbecometheactualstandardsuccessfullythroughprovidingtherealizedsourcecodefreereferencetechnologyvisitauthorityonanyplatform.Thenetworkfileservertechnology,anotherSunMicrosystemsstechnology,oneoffirstgenerationofsuccessfuldistributedcomputertechnologies,isbasedontheopenstylenetworkcomputation.Thenetworkfileserveristhetechnologybasedontheorientedprocess,isheldintheCprogramminglanguage,likeotherimportantlongdistanceprocedurecalltechnologiesdistributedcomputingenvironment.Thetwokindsoftechnologiesallrealizethedocumentsharingabilitywidely.Thedatabaseservertechnologyprovidesthatthedifferentclientplatformaccessthelongdistancedatabasesystembytheselowerlevelsdistributedcomputingability.HasthematteryouQI,notlongsincethisspeechiswidelypopularbothsidesoftheriverduringonenight,becomesstandardmessagewhilepeopleleave.TheonlywordwitnessesthecoprosperityandcoindignityhistoryofthetimelycommunicationandtheChineseInternet.Thatcantdenythat,thetimelycommunicationfacilitieswhichtakethefast,interactive,easilyastherepresentative,alreadybecamethenetworkcommunicationtoolwhichthecurrentnetworkusersmostlylike.TheotherInternetincrementservicesBasedonthetimelycommunicationsplatform,likethephonetic,musicorder,informationsharingandsoonarealsochangingpeopleslifestylebytheunprecedentedspeed.AlongwithInternetapplicationismoreandmorerichintheyears,TheInternetthirdwaryearerupteddrastically.AfterTencentQQhaveoccupiedthetimelycommunicationmarket76.7,MicrosoftMSN,NetEasyPOPO,YahooMessenger,Skypeandsoonenterthemarketinabundance,strivetobethefirststrenuously.Firstly,theimmediatecommunicationapplicationwillbeevenmoremultiform.Inlaterseveralyears,peoplemighttheclearlyfeelthatthechattedentertainmentdemandwhichtheuserdemandtimelycommunicationisgrowingunceasingly,alongwiththetimelycommunicationfacilitiesitselfmoreandmorerichly.Theapplicationofthemoreprolificentertainmentwillalreadybecomesthemaindevelopmentdirectionofthetimelycommunicationinfuture.Inordertomeettheuserexuberantentertainmentapplicationneeddaybyday,manytimelycommunicationsservicesprovidersalldeveloptheprolificapplicationbasedonthetimelycommunicationplatform,forexampleThevirtualimage,themagicexpressionandthevirtualpetsandsoon,whichthenewapplicationemergesoneafteranotherincessantly.Second,thetimelycommunicationevenwillbemoreandmoreabsorbsthepeoplesattention,willmanifestthecommunityandInteractionTheanalysisdemonstrated,thereasonthatthetimelycommunicationisdevelopinginrecentyearsswiftlyandviolently,istheimportantimpetusfactornotonlytheitsitselffunctionbutalsotheInternetrapidlygatheringuser.AccordingtotheCNNICstatisticsreporttheuseraccessedtheinternetistotalto87millionusersinourcountryuntilJune30,2004,thecomputersaccessedtheinternethaveachieved36.3millioncomputers,thenetworkapplicationofthetimelycommunicationservicesliketheemail、thesearchengine、thebrowsinginformationandsoonaregoingintotoinwebusersdailylifeinmaximum.FollowingtheInternetdevelopmentandthenetworkuserdemand,thecommunityandtheinteractionwhichareabsorbingamassofuserswillalsobecometheimportantdevelopmenttendencyofthetimelycommunication.AccordingtotheconcernedexpertforecastthatthenetworkhypothesizedlifewillbecomethehotspotoftheInternetapplicationinthefuturetwoorthreeyears.Thenetworkusermayhavenetworklifelikethereallifee.g.purchaseshomes,buysthevehicle,andraisesthepetandsoon.Atthesametime,thepurechattingtoolisentrustingwiththenewconnotation,becomesarichindividualspace.Therearenotonlythefriendswhomaychatwithyou,butalsogames,news,community,diaryandsoon.TheInternetenterprisesetsupthealumnusinthenetwork,foundscommunity,providestheplatformwhichcomposesthediaryforthenetworkuser,letstheusersestablishtheirownblog.Itissatisfiedthenetworkusersdemandtothenetworkhypothesizedlife.Thethirdtendencywillbetheevenmoreoutstandingfunctionprocessingindividualinformationoftheimmediatecommunication.Humanizationwillbecomethefinalfactoroftheimmediatecommunicationasthemostquickandconvenientcommunicationtool.Atpresentitalreadywasappliedwidelytointhedailyworkandthestudy.TheuserhadaffiliatedwithandsavedthemassivematerialsdocumentontheInterneteveryday.Therefore,asthetransmissioninformationterminal,theindividualinformationprocessingfunctionoftheimmediatecommunicationwilldecidetheitselfvitalityradically,whichnotonlyincludestheinformationinteractivefunctionofthewritingdialogue、thevoicecommunication、thevideointercommunion,butalsoincludestheinformationsharingfunctionofthefiletransferandthetransmissionpicture,meanwhileincludestheeffectivepreservationofthechattedrecording,thedowntransmissionanddownloadinformationmanagementfunction.ThefourthtendencyisthattheimmediatecommunicationevenmoreemphasizestheInternetapplicationconformity,thewirelessInternetresourcesconformityinparticular.NowtheapplicationoftheimmediatecommunicationandtheexchangeoftheInternetinformationalreadymergedintooneorganicbody,sotheeachkindofserviceoftheconformityInternetwillbecometheinevitabletrendwhichtheimmediatecommunicationfuturewilldevelop,whichsatisfiestheimmediatecommunicationuserssharetheInternetresources.Atpresent,SinaUC、theneteasyhubblebubblehavethegatewaywebsitetheformidablenetworkresources,butMicrosoftalsoisstrengtheningthegatewaywiththeaidofMSNtheinfluence.Theimmediatecommunicationapplicationwillpresentwiththetraditionalgatewaywebsite,motionorthefixedterminal,thenetworkapplicationincrementservicedepthconformitytendencyinthewirelessInternetresourcesconformity,thepeoplehopetogetsridthelinefetterandgetthewirelessfreedommoreandmore,alongwithhandsetapplicationisstudiedanddevelopedunceasinglyinthenearlytwoyearinourcountry.Thewirelessaccesseswillbecomethenetworkuserspet.Thatthehandsetlandsoracceptsfromtheinternetinformationisalsotoreceivetheusersfavor,especiallytheimmediateinformationornews.InfuturetheconformitybetweentheInternetandthewirelessnetwillbetheinevitablehome,themutualconnectionbetweentheimmediatecommunicationandthewirelesswillalsobeawaythatmustbetaken.Alongwith3Gdevotion,theimmediatecommunicationusersmotiondemandishighertheimmediatecommunicationmotionincrementservicewillbeabletodeveloponesabilitytothefull.ThefifthtendencywillbethattheimmediatecommunicationevenmoremanifeststhesecurityandthestabilityAccordingasinvestigationdemonstration,theusernotonlyneedstorealizethevoice,audiofrequency,videofunctionandsoonthroughtheimmediatecommunication,butalsotheimmediatecommunicationsecurityalongwitheachkindofdataserviceapplicationincreasing.IDrobbed,privacyexposition,viralinvasionandsoonispuzzlingallalong.Inparticulartotheenterpriseusers,ifthesecuritymeasureisunreliable,theenterprisewillpaythehugepriceforthebug.Withoutadoubt,thesafetyhasalreadybecomethebasisofimmediatecommunicationsafeguardfoundationapplicationinthefuture.Becausetheentireindustrydidnotyetformulatestheimmediatecommunicationsecuritystandard,thefadimmediatecommunicationsoftwaresatpresentareallthefilesaccess、thefilestransmission、thepasswordinputencryptionsimpleness,thereforewhichdidnotfullysafeguardtousersusesafetyandprivacy.QQhasadoptedthedesignmodeloftheadvancedopensecuresystemstructureand128bithighstrengthencryptionalgorithmitguaranteethesecurityoftheentiresystemthroughaseriesofcomplexshakehandauthenticationmechanism.InfutureitwillguaranteetheQQsafeguardmeasuresthattheuserisusingofbasedontheexistingfoundationOnemeasureisthatthelocalinformationmemoryandthenetworkintelligencetransmissionencryptionalgorithmTwomeasureisthatmorestrengthenstheuserspasswordsecurityThreemeasureisthatmorepreventedthemaliciouslinkandthemaliciousvirusspreadthroughQQ.Thusitisobviousthat,althoughthetechnicalsupportbasesthesafefoundation,theselfconsciousnessandtheinitiativeoftheprotectionusersafetyareespeciallyimportant.Inthisaspect,theuseris