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计算机网络管理员《单项选择》真题及答案
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要限制宏操作的范围可以创建宏时定义
宏操作对象
宏条件表达式
窗体或报表控件属性
宏操作目标
要限制宏操作的范围可以在创建宏时定义______
宏操作对象
宏条件表达式
窗体或报表控件属性
宏操作目标
在ACCESS中创建宏时不用定义______
窗体或报表的属性
宏名
宏操作命令语句
宏操作参数
创建宏不用定义
宏名
窗体属性
宏操作目标
宏操作对象
创建宏不用定义
宏名
窗体或报表控件属性
宏操作目标
宏操作对象
要限制宏操作的操作范围可以在创建宏时定义______
宏操作对象
宏条件表达式
窗体或报表控件属性
宏操作目标
要限制宏命令的操作范围可以在创建宏时定义______
宏操作对象
宏条件表达式
窗体或报表控件
宏操作目标
要限制宏操作的范围可以在创建宏时定义
宏操作对象
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Amanagementdomaintypicallycontainsalargeamountofmanagementinformation.Eachindividualitemof1informationisaninstanceofamanagedobjecttype.Thedefinitionofarelatedsetofmanaged2typesiscontainedinaManagementInformationBaseMIBmodule.ManysuchMIBmodulesaredefined.ForeachmanagedobjecttypeitdescribesaMIB3definesnotonlythesemanticsandsyntaxofthatmanagedobjecttypebutalsothemethodofidentifyinganindividualinstancesothatmultiple4ofthesamemanagedobjecttypecanbedistinguished.Typicallythereareinstancesofeachmanagedobject5withinamanagementdomain. 5是
Bothbusandtreetopologiesarecharacterizedbytheuseofmultipoint1.Forthebusallstationsattachthroughappropriatehardware2knownasatapdirectlytoalineartransmissionmediumorbus.Full-duplexoperationbetweenthestationandthetapallowsdatatobetransmittedontothebusandreceivedfromthe3.Atransmissionfromanystationpropagatesthelengthofthemediuminbothdirectionsandcanbereceivedbyallother4.Ateachendofthebusisa5whichabsorbsanysignalremovingitfromthebus. 4是
Aninternetisacombinationofnetworksconnectedby1.Whenadatagramgoesfromasourcetoa2itwillprobablypassmany3untilitreachestherouterattachedtothedestinationnetwork.Arouterreceivesa4fromanetworkandpassesittoanothernetwork.Arouterisusuallyattachedtoseveralnetworks.WhenitreceivesapackettowhichnetworkshoulditpassthepacketThedecisionisbasedonoptimization:Whichoftheavailable5istheoptimumpathway 4是
AtransportlayerprotocolhasseveralresponsibilitiesOneistocreateaprocess-to-processprogram-to-programcommunication;TCPusesport1toaccomplishthis.Anotherresponsibilityofatransportlayerprotocolistocreatea2anderror-controlmechanismatthetransportlevel.TCPusesasliding3protocoltoachieveflowcontrol.Itusestheacknowledgmentpackettime-outandretransmissiontoachieve4control.Thetransportlayerisalsoresponsibleforprovidingaconnectionmechanismfortheapplicationprogram.Theapplicationprogramsends5ofdatatothetransportlayer.Itistheresponsibilityofthetransportlayeratthesendingstationtomakeaconnectionwiththereceiver. 5是
在Windows资源管理器的左窗格中若显示的文件夹图标前带有“”标志则意味着该文件夹
Wehavealreadycoveredthetopicofnetworkaddresses.Thefirst1inablockinclassABandCdefinesthenetworkaddress.InclassesABandCifthehostedisall1stheaddressiscalledadirectbroadcastaddress.Itisusedbya2tosendapackettoallhostsinaspecificnetwork.Allhostswillacceptapackethavingthistypeofdestinationaddress.Notethatthisaddresscanbeusedonlyasa3addressinanIPpacket.NotealsothatthisspecialaddressalsoreducesthenumberifavailablehostedforeachnetidinclassesABandC. InclassesABandCanaddresswithall1sforthenetidandhosted32bitsdefinea4addressinthecurrentnetwork.AhostthatwantstosendamessagetoeveryotherhostscanusethisaddressasdestinationaddressinanIPpacket.Howeverarouterwillblockapackethavingthistypeofaddresstoconfinethebroadcastingtothe5network.NotethatthisaddressbelongstoclassE. 2是
在Windows的资源管理器窗口中单击需要选定的第一个文件按下______键再单击需要选定的最后一个文件能够一次选定连续的多个文件
Thepresentationlayerisconcernedwiththe1andsemanticsoftheinformationexchangedbetweentwosystems.Theprocessesintwosystemsareusuallyexchanginginformationintheformofcharacter2numbersandsoon.Theinformationshouldbechangedtobit3beforebeingtransmitted.Becausedifferentencodingsystemsthepresentationlayerisresponsiblefor4betweenthesedifferentencodingmethods.Thepresentationlayeratthesenderchangestheinformationfromitssender-dependentformatintoacommonformat.Thepresentationlayeratthereceivingmachinechangesthecommonformatintoits5dependentformat. 2是
Bothbusandtreetopologiesarecharacterizedbytheuseofmultipoint1.Forthebusallstationsattachthroughappropriatehardware2knownasatapdirectlytoalineartransmissionmediumorbus.Full-duplexoperationbetweenthestationandthetapallowsdatatobetransmittedontothebusandreceivedfromthe3.Atransmissionfromanystationpropagatesthelengthofthemediuminbothdirectionsandcanbereceivedbyallother4.Ateachendofthebusisa5whichabsorbsanysignalremovingitfromthebus. 2是
______属于系统软件它直接执行高级语言源程序或与源程序等价的某种中间代码
AtransportlayerprotocolhasseveralresponsibilitiesOneistocreateaprocess-to-processprogram-to-programcommunication;TCPusesport1toaccomplishthis.Anotherresponsibilityofatransportlayerprotocolistocreatea2anderror-controlmechanismatthetransportlevel.TCPusesasliding3protocoltoachieveflowcontrol.Itusestheacknowledgmentpackettime-outandretransmissiontoachieve4control.Thetransportlayerisalsoresponsibleforprovidingaconnectionmechanismfortheapplicationprogram.Theapplicationprogramsends5ofdatatothetransportlayer.Itistheresponsibilityofthetransportlayeratthesendingstationtomakeaconnectionwiththereceiver. 3是
Traditionalnetworklayerpacketforwardingreliesontheinformationprovidedbynetworklayer1protocolsorstaticroutingtomakeanindependent2decisionsateachhopwithinthenetwork.Theforwarding3isbasedsolelyonthedestination4IPaddress.Allpacketsforthesamedestinationfollowthesamepathacrossthenetworkifnootherequal-costpathsexist.Wheneverarouterhastwoequal-cost5towardadestinationthepacketstowardthedestinationmighttakeoneorbothofthemresultinginsomedegreeofloadsharing. 4是
OneofthemainresponsibilitiesofICMPistoreport1.Althoughtechnologyhasproducedincreasinglyreliabletransmissionmediaerrorsstillexistandmustbehandled.IPisan2protocol.ThismeansthaterrorcheckinganderrorcontrolarenotaconcemofIPJCMPwasdesignedinparttocompensateforthisshortcoming.HowerverICMPdoesnot3errorsitsimplyreportsthem.Errorcorrectionislefttothehigher-levelprotocols.Errormessagesarealwayssenttotheoriginal4becausetheonlyinformationavailableinthedatagramabouttherouteisthesourceanddestination1Paddresses.ICMPusesthesourceIPaddresstosendtheerrormassagetothesourceofthe5 1是
某品牌商品的销售情况如图1所示若想按产品类别分别累计销售量可使用分类汇总命令汇总的结果如图2所示 图1 图2 在进行分类汇总前应先对数据清单中的记录按1字段进行排序选择“数据/分类汇总”命令并在弹出的“分类汇总”对话框中的“选定汇总项”列表框内选择要进行汇总的2字段再单击“确认”按钮 1
Traditionalnetworklayerpacketforwardingreliesontheinformationprovidedbynetworklayer1protocolsorstaticroutingtomakeanindependent2decisionsateachhopwithinthenetwork.Theforwarding3isbasedsolelyonthedestination4IPaddress.Allpacketsforthesamedestinationfollowthesamepathacrossthenetworkifnootherequal-costpathsexist.Wheneverarouterhastwoequal-cost5towardadestinationthepacketstowardthedestinationmighttakeoneorbothofthemresultinginsomedegreeofloadsharing. 2是
Amanagementdomaintypicallycontainsalargeamountofmanagementinformation.Eachindividualitemof1informationisaninstanceofamanagedobjecttype.Thedefinitionofarelatedsetofmanaged2typesiscontainedinaManagementInformationBaseMIBmodule.ManysuchMIBmodulesaredefined.ForeachmanagedobjecttypeitdescribesaMIB3definesnotonlythesemanticsandsyntaxofthatmanagedobjecttypebutalsothemethodofidentifyinganindividualinstancesothatmultiple 4ofthesamemanagedobjecttypecanbedistinguished.Typicallythereareinstancesofeachmanagedobject5withinamanagementdomain. 1是
For1serviceweneedavirtual-circuitsubnet.Letusseehowthatworks.Theideabehindvirtualcircuitsistoavoidhavingtochooseanew2foreverypacketsent.Insteadwhenaconnectionisestablishedaroutefromthe3machinetothedestinationmachineischosenaspartoftheconnectionsetupandstoredintablesinsidethe4Thatrouteisusedforalltrafficflowingovertheconnectionexactlythesamewaythatthetelephonesystemworks.Whentheconnectionisreleasedthevirtualcircuitisalsoterminated.Withconnection-orientedserviceeachpacketcarriesan5tellingwhichvirtualcircuititbelongsto. 5是
Thepresentationlayerisconcernedwiththe1andsemanticsoftheinformationexchangedbetweentwosystems.Theprocessesintwosystemsareusuallyexchanginginformationintheformofcharacter2numbersandsoon.Theinformationshouldbechangedtobit 3beforebeingtransmitted.Becausedifferentencodingsystemsthepresentationlayerisresponsiblefor4betweenthesedifferentencodingmethods.Thepresentationlayeratthesenderchangestheinformationfromitssender-dependentformatintoacommonformat.Thepresentationlayeratthereceivingmachinechangesthecommonformatintoits 5dependentformat. 4是
Amanagementdomaintypicallycontainsalargeamountofmanagementinformation.Eachindividualitemof1informationisaninstanceofamanagedobjecttype.Thedefinitionofarelatedsetofmanaged2typesiscontainedinaManagementInformationBaseMIBmodule.ManysuchMIBmodulesaredefined.ForeachmanagedobjecttypeitdescribesaMIB3definesnotonlythesemanticsandsyntaxofthatmanagedobjecttypebutalsothemethodofidentifyinganindividualinstancesothatmultiple4ofthesamemanagedobjecttypecanbedistinguished.Typicallythereareinstancesofeachmanagedobject5withinamanagementdomain. 3是
OneofthemainresponsibilitiesofICMPistoreport______.Althoughtechnologyhasproducedincreasinglyreliabletransmissionmediaerrorsstillexistandmustbehandled.IPisan______protocol.ThismeansthaterrorcheckinganderrorcontrolarenotaconcemofIPJCMPwasdesignedinparttocompensateforthisshortcoming.HowerverICMPdoesnot______errorsitsimplyreportsthem.Errorcorrectionislefttothehigher-levelprotocols.Errormessagesarealwayssenttotheoriginal______becausetheonlyinformationavailableinthedatagramabouttherouteisthesourceanddestination1Paddresses.ICMPusesthesourceIPaddresstosendtheerrormassagetothesourceofthe______.
MIDI数据与数字化波形声音数据______
For1serviceweneedavirtual-circuitsubnet.Letusseehowthatworks.Theideabehindvirtualcircuitsistoavoidhavingtochooseanew 2foreverypacketsent.Insteadwhenaconnectionisestablishedaroutefromthe3machinetothedestinationmachineischosenaspartoftheconnectionsetupandstoredintablesinsidethe4Thatrouteisusedforalltrafficflowingovertheconnectionexactlythesamewaythatthetelephonesystemworks.Whentheconnectionisreleasedthevirtualcircuitisalsoterminated.Withconnection-orientedserviceeachpacketcarriesan5tellingwhichvirtualcircuititbelongsto. 1是
Wehavealreadycoveredthetopicofnetworkaddresses.Thefirst1inablockinclassABandCdefinesthenetworkaddress.InclassesABandCifthehostedisall1stheaddressiscalledadirectbroadcastaddress.Itisusedbya2tosendapackettoallhostsinaspecificnetwork.Allhostswillacceptapackethavingthistypeofdestinationaddress.Notethatthisaddresscanbeusedonlyasa3addressinanIPpacket.NotealsothatthisspecialaddressalsoreducesthenumberifavailablehostedforeachnetidinclassesABandC. InclassesABandCanaddresswithall1sforthenetidandhosted32bitsdefinea4addressinthecurrentnetwork.AhostthatwantstosendamessagetoeveryotherhostscanusethisaddressasdestinationaddressinanIPpacket.Howeverarouterwillblockapackethavingthistypeofaddresstoconfinethebroadcastingtothe5network.NotethatthisaddressbelongstoclassE. 4是
Aninternetisacombinationofnetworksconnectedby1.Whenadatagramgoesfromasourcetoa2itwillprobablypassmany3untilitreachestherouterattachedtothedestinationnetwork.Arouterreceivesa4fromanetworkandpassesittoanothernetwork.Arouterisusuallyattachedtoseveralnetworks.WhenitreceivesapackettowhichnetworkshoulditpassthepacketThedecisionisbasedonoptimization:Whichoftheavailable5istheoptimumpathway 2是
商标法主要是保护______的权利
AtransportlayerprotocolhasseveralresponsibilitiesOneistocreateaprocess-to-processprogram-to-programcommunication;TCPusesport 1toaccomplishthis.Anotherresponsibilityofatransportlayerprotocolistocreatea2anderror-controlmechanismatthetransportlevel.TCPusesasliding3protocoltoachieveflowcontrol.Itusestheacknowledgmentpackettime-outandretransmissiontoachieve 4control.Thetransportlayerisalsoresponsibleforprovidingaconnectionmechanismfortheapplicationprogram.Theapplicationprogramsends5ofdatatothetransportlayer.Itistheresponsibilityofthetransportlayeratthesendingstationtomakeaconnectionwiththereceiver. 1是
扩展名为WAV的文件属于______文件格式
For1serviceweneedavirtual-circuitsubnet.Letusseehowthatworks.Theideabehindvirtualcircuitsistoavoidhavingtochooseanew2foreverypacketsent.Insteadwhenaconnectionisestablishedaroutefromthe3machinetothedestinationmachineischosenaspartoftheconnectionsetupandstoredintablesinsidethe4Thatrouteisusedforalltrafficflowingovertheconnectionexactlythesamewaythatthetelephonesystemworks.Whentheconnectionisreleasedthevirtualcircuitisalsoterminated.Withconnection-orientedserviceeachpacketcarriesan5tellingwhichvirtualcircuititbelongsto. 3是
下列选项中不受我国著作权法保护的作品是______
OneofthemainresponsibilitiesofICMPistoreport1.Althoughtechnologyhasproducedincreasinglyreliabletransmissionmediaerrorsstillexistandmustbehandled.IPisan2protocol.ThismeansthaterrorcheckinganderrorcontrolarenotaconcemofIPJCMPwasdesignedinparttocompensateforthisshortcoming.HowerverICMPdoesnot3errorsitsimplyreportsthem.Errorcorrectionislefttothehigher-levelprotocols.Errormessagesarealwayssenttotheoriginal4becausetheonlyinformationavailableinthedatagramabouttherouteisthesourceanddestination1Paddresses.ICMPusesthesourceIPaddresstosendtheerrormassagetothesourceofthe5 3是
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