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UML中有多种类型的图,其中, (49) 对系统的使用方式进行分类, (50) 显示了类及其相互关系, (51) 显示了人或对象的活动,其方式类似于流程图,通信图显示了在某种情况下对象之间发送的消息,...
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UML中有多种类型的图其中44对系统的使用方式进行分类45显示了类及其相互关系46显示人或对象
用例图
顺序图
类图
活动图
UML中有多种类型的图其中49对系统的使用方式进行分类50显示了类及其相互关系51显示了人或对
用例图
顺序图
类图
活动图
UML中有多种类型的图其中1对系统的使用方式进行分类2显示了类及其相互关系3显示人或对象的活动其方式
用例图
顺序图
类图
活动图
UML中有多种类型的图其中1对系统的使用方式进行分类2显示了类及其相互关系3显示人或对象的活动其方式
用例图
顺序图
类图
活动图
UML中有多种类型的图其中44对系统的使用方式进行分类45显示了类及其相互关系46显示人或对象
用例图
顺序图
类图
活动图
UML中有多种类型的图其中39对系统的使用方式进行分类40显示了类及其相互关系41显示人或对象
用例图
顺序图
类图
活动图
UML中有多种类型的图其中1对系统的使用方式进行分类2显示了类及其相互关系3显示人或对象的活动其方式
用例图
顺序图
类图
活动图
UML中有多种类型的图其中49对系统的使用方式进行分类50显示了类及其相互关系51显示了人或对
用例图
顺序图
类图
活动图
UML中有多种类型的图其中49对系统的使用方式进行分类50显示了类及其相互关系51显示了人或对
用例图
顺序图
类图
活动图
UML中有多种类型的图其中44对系统的使用方式进行分类45显示了类及其相互关系46显示人或对象
用例图
顺序图
类图
活动图
UML中有多种类型的图其中44对系统的使用方式进行分类45显示了类及其相互关系46显示人或对象
用例图
顺序图
类图
活动图
UML中有多种类型的图其中44对系统的使用方式进行分类45显示了类及其相互关系46显示人或对象
用例图
顺序图
类图
活动图
UML中有多种类型的图其中39对系统的使用方式进行分类40显示了类及其相互关系41显示人或对象
用例图
顺序图
类图
活动图
UML中有多种类型的图其中49对系统的使用方式进行分类50显示了类及其相互关系51显示了人或对
用例图
顺序图
类图
活动图
UML中有多种类型的图其中44对系统的使用方式进行分类45显示了类及其相互关系46显示人或对象
用例图
顺序图
类图
活动图
UML中有多种类型的图其中44对系统的使用方式进行分类45显示了类及其相互关系46显示人或对象
用例图
顺序图
类图
活动图
UML中有多种类型的图其中44对系统的使用方式进行分类45显示了类及其相互关系46显示人或对象
用例图
顺序图
类图
活动图
UML中有多种类型的图其中39对系统的使用方式进行分类40显示了类及其相互关系41显示人或对象
用例图
顺序图
类图
活动图
UML中有多种类型的图其中1对系统的使用方式进行分类2显示了类及其相互关系3显示人或对象的活动其方式
用例图
顺序图
类图
活动图
UML中有多种类型的图其中39对系统的使用方式进行分类40显示了类及其相互关系41显示人或对象
用例图
顺序图
类图
活动图
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Thepurposeoftherequirementsdefinitionphaseistoproduceaclearcompleteconsistentandtestable36ofthetechnicalrequirementsforthesoftwareproduct. Duringtherequirementsdefinitionphasetherequirementsdefinitionteamusesaninterativeprocesstoexpandabroadstatementofthesystemrequirementsintoacompleteanddetailedspecificationofeachfunctionthatthesoftwaremustperformandeach37thatitmustmeet.Thestartingpointisusuallyasetofhighlevelrequirementsfromthe38thatdescribetheprojectorproblem. Ineithercasetherequirementsdefinitionteamformulatesanoverallconceptfor’thesystemandthendefines39showinghowthesystemwillbeoperatedpublishesthesystemandoperationsconceptdocumentandconductsasystemconceptreviewSCR. FollowingtheSCRtheteamderives40requirementsforthesystemfromthehighlevelrequirementsandthesystemandoperationsconceptusingstructuredorobject-orientedanalysis.Theteamspecifiesthesoftwarefunctionsandalgorithmsneededtosatisfyeachdetailedrequirement. 36是
41isaprotocolthatahostusestoinformarouterwhenitjoinsorleavesanInternetmulticastgroup. 42isanerrordetectioncodethatmostdatacommunicationnetworksuse. 43isaninteriorgatewayprotocolthatusesadistancevectoralgorithmtopropagateroutinginformation. 44isatransfermodeinwhichalltypesofinformationareorganizedintofixedformcellsonanasynchronousornon-periodicbasisoverarangeofmedia. 45isanidentifierofawebpage. 45是
41isaprotocolthatahostusestoinformarouterwhenitjoinsorleavesanInternetmulticastgroup. 42isanerrordetectioncodethatmostdatacommunicationnetworksuse. 43isaninteriorgatewayprotocolthatusesadistancevectoralgorithmtopropagateroutinginformation. 44isatransfermodeinwhichalltypesofinformationareorganizedintofixedformcellsonanasynchronousornon-periodicbasisoverarangeofmedia. 45isanidentifierofawebpage. 43是
41isaprotocolthatahostusestoinformarouterwhenitjoinsorleavesanInternetmulticastgroup. 42isanerrordetectioncodethatmostdatacommunicationnetworksuse. 43isaninteriorgatewayprotocolthatusesadistancevectoralgorithmtopropagateroutinginformation. 44isatransfermodeinwhichalltypesofinformationareorganizedintofixedformcellsonanasynchronousornon-periodicbasisoverarangeofmedia. 45isanidentifierofawebpage. 41是
在软件开发过程中常用图作为描述工具DFD就是面向46分析方法的描述工具在一套分层DFD中如果某一张图中有N个加工Process则这张图允许有47张子图在一张DFD图中任意两个加工之间48在画分层DFD时应注意保持49之间的平衡DFD中从系统的输入流到系统的输出流的一连串连续变换形成一种信息流这种信息流可分为50两大类
51isasixbytesOSIlayer2addresswhichisburnedintoeverynetworkingdevicethatprovidesitsuniqueidentityforpointtopointcommunication. 52isaprofessionalorganizationofindividualsinmultipleprofessionswhichfocusesoneffortonlower-layerprotocols. 53functionswithtwolayersofprotocols.Itcanconnectnetworksofdifferentspeedsandcanbeadaptedtoanenvironmentasitexpands. 54isthepopularLANdevelopedunderthedirectionoftheIEEE802.5. 55isthepopularbackbonetechnologyfortransmittinginformationathighspeedwithahighleveloffaulttolerancewhichisdevelopedunderthedirectionofANSI. 53是
Networkscanbeinterconnectedbydifferentdevices.Inthephysicallayernetworkscanbeconnectedby31orhubswhichjustmovethebitsfromonenetworktoanidenticalnetwork.Onelayerupwefindbridgesandswitcheswhichoperateatdatalinklayer.Theycanaccept32examinetheMACaddressandforwardtheframestoadifferentnetworkwhiledoingminorprotocoltranslationintheprocess.Innetworklayerwehaveroutersthatcanconnecttwonetworks.Iftwonetworkshave33networklayerthemutermaybeabletotranslatebetweenthepackerformats.Inthetransportlayerwefindtransportgatewaywhichcaninterfacebetweentwotransportconnections.Finallyintheapplicationlayerapplicationgatewaystranslatemessage34.AsanexamplegatewaysbetweenInternete-mailandX.400e-mailmust35thee-mailmessageandchangevariousheaderfields. 32是
Thepurposeoftherequirementsdefinitionphaseistoproduceaclearcompleteconsistentandtestable36ofthetechnicalrequirementsforthesoftwareproduct. Duringtherequirementsdefinitionphasetherequirementsdefinitionteamusesaninterativeprocesstoexpandabroadstatementofthesystemrequirementsintoacompleteanddetailedspecificationofeachfunctionthatthesoftwaremustperformandeach37thatitmustmeet.Thestartingpointisusuallyasetofhighlevelrequirementsfromthe38thatdescribetheprojectorproblem. Ineithercasetherequirementsdefinitionteamformulatesanoverallconceptfor’thesystemandthendefines39showinghowthesystemwillbeoperatedpublishesthesystemandoperationsconceptdocumentandconductsasystemconceptreviewSCR. FollowingtheSCRtheteamderives40requirementsforthesystemfromthehighlevelrequirementsandthesystemandoperationsconceptusingstructuredorobject-orientedanalysis.Theteamspecifiesthesoftwarefunctionsandalgorithmsneededtosatisfyeachdetailedrequirement. 40是
的邻接矩阵是一个对称矩阵
斐波那契Fibonacci数列可以递归地定义为 用递归算法求解F5时需要执行76次“+”运算该方法采用的算法策略是77 76处填
51isasixbytesOSIlayer2addresswhichisburnedintoeverynetworkingdevicethatprovidesitsuniqueidentityforpointtopointcommunication. 52isaprofessionalorganizationofindividualsinmultipleprofessionswhichfocusesoneffortonlower-layerprotocols. 53functionswithtwolayersofprotocols.Itcanconnectnetworksofdifferentspeedsandcanbeadaptedtoanenvironmentasitexpands. 54isthepopularLANdevelopedunderthedirectionoftheIEEE802.5. 55isthepopularbackbonetechnologyfortransmittinginformationathighspeedwithahighleveloffaulttolerancewhichisdevelopedunderthedirectionofANSI. 55是
Networkscanbeinterconnectedbydifferentdevices.Inthephysicallayernetworkscanbeconnectedby31orhubswhichjustmovethebitsfromonenetworktoanidenticalnetwork.Onelayerupwefindbridgesandswitcheswhichoperateatdatalinklayer.Theycanaccept32examinetheMACaddressandforwardtheframestoadifferentnetworkwhiledoingminorprotocoltranslationintheprocess.Innetworklayerwehaveroutersthatcanconnecttwonetworks.Iftwonetworkshave33networklayerthemutermaybeabletotranslatebetweenthepackerformats.Inthetransportlayerwefindtransportgatewaywhichcaninterfacebetweentwotransportconnections.Finallyintheapplicationlayerapplicationgatewaystranslatemessage34.AsanexamplegatewaysbetweenInternete-mailandX.400e-mailmust35thee-mailmessageandchangevariousheaderfields. 34是
MIDIenablespeopletouse11computersandelectronicmusicalinstruments.ThereareactuallythreecomponentstoMIDIthecommunications"12."theHardwareInterfaceandadistribution13called"StandardMIDIFiles".InthecontextoftheWWWthemostinterestingcomponentisthe14Format.InprincipleMIDIfilescontainsequencesofMIDIProtocolmessages.HoweverwhenMIDIProtocol15arestoredinMIDIfilestheeventsarealsotime-stampedforplaybackinthepropersequence.MusicdeliveredbyMIDIfilesisthemostcommonuseofMIDItoday. 13是
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已知某二叉树的中序序列为CBDAEFI先序序列为ABCDEFI则该二叉树的高度为
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