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单项选择题

WhichstatementistruewhenICMPechoandecho－replyaredisabledonedgedevices？（）

A.Pingsareallowedonlytospecificdevices.
B.CDPinformationisnotexchanged.
C.Portscanscannolongerberun.
D.Somenetworkdiagnosticdataislost.
E.Wirelessdevicesneedtobephysicallyconnectedtotheedgedevice.
F.OSPFroutingneedsthecommandipospfnetworknon-broadcastenabled.
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单项选择题WhichstatementcorrectlydescribesenablingBPDUguardonanaccessportthatisalsoenabledforPortFast？（）

A.Uponstartup，theporttransmits10BPDUs.IftheportreceivesaBPDU，PortFastandBPDUguardaredisabledonthatportanditassumesnormalSTPoperation.
B.TheaccessportignoresanyreceivedBPDU.
C.IftheportreceivesaBPDU，itisplacedintotheerror-disablestate.
D.BPDUguardisonlyconfiguredgloballyandtheBPDUfilterisrequiredforport-levelconfiguration.

单项选择题Inyourdatabase，youdiscoveredthatatempfileinalocallymanagedtemporarytablespacehasbeendeletedattheoperatingsystemlevel.Howwouldyourecoverthetablespace？（）

A.flashbackthedatabase
B.performpoint-in-timerecovery
C.performafulldatabaserecovery
D.dropandre-createthetablespace
E.useRecoveryManager（RMAN）torecoverthedatabase

单项选择题本地电子商务指的是().

A.在全世界范围内进行的电子交易活动,交易各方通过网络做生意
B.指利用本地区或者本城市的信息网络实现的电子商务活动
C.就是利用EDI网络进行电子交易
D.利用Internet网络进行电子交易

单项选择题Theaccountingmanagerwantsyoutocreateaformthatwhenqueriedwilldisplayacalculatedtotalofyear-to-dateactualexpendituresforthefundcodeentered.Thevalueneededtogeneratethissummarydataarestoredinmultipletables.HowwouldyoudefinethedatasourceforthisdatablockwithouthavingtheDBAcreateadatabaseobject?（）A.ChooseTools->DataBlockWizard,selectViewasthedatasourcetype,andbasetheblockonthecolumnsfromthebales.B.ChooseTools->DataBlockWizard,selectTableasthedatasourcetype,andbasetheblockonthecolumnsfromthetables.C.SelecttheDataBlocksnodeintheObjectNavigatorandclicktheCreatebutton.ChoosetobuildthedatablockmanuallyandaltertheQueryDataSourceColumnsandQueryDataSourceArgumentspropertiestoentertheSELECTstatement.D.SelecttheDataBlocksnodeintheObjectNavigatorandclicktheCreatebutton.Choosetobuildthedatablockmanually,altertheQueryDataSourceTypepropertyto‘Table‘,andentertheSELECTstatementintheQueryDataSourceNameproperty.E.ChooseTools->DataBlockWizard,selectStoredProcedureasthedatasourcetype,andbasetheblockonthecolumnsthetables.F.SelecttheDataBlocksnodeintheObjectNavigatorandclicktheCreatebutton.Choosetobuildthedatablockmanually.AltertheQueryDataSourceTypeto‘FROM‘clausequery‘,andentertheSELECTstatementintheQueryDataSourceNameproperty.

A.Thevalueneededtogeneratethissummarydataarestoredinmultipletables.HowwouldyoudefinethedatasourceforthisdatablockwithouthavingtheDBAcreateadatabaseobject?（）
A.ChooseTools->DataBlockWizard,selectViewasthedatasourcetype,andbasetheblockonthecolumnsfromthebales.
B.ChooseTools->DataBlockWizard,selectTableasthedatasourcetype,andbasetheblockonthecolumnsfromthetables.
C.SelecttheDataBlocksnodeintheObjectNavigatorandclicktheCreatebutton.ChoosetobuildthedatablockmanuallyandaltertheQueryDataSourceColumnsandQueryDataSourceArgumentspropertiestoentertheSELECTstatement.
D.SelecttheDataBlocksnodeintheObjectNavigatorandclicktheCreatebutton.Choosetobuildthedatablockmanually,altertheQueryDataSourceTypepropertyto‘Table‘,andentertheSELECTstatementintheQueryDataSourceNameproperty.
E.ChooseTools->DataBlockWizard,selectStoredProcedureasthedatasourcetype,andbasetheblockonthecolumnsthetables.
F.SelecttheDataBlocksnodeintheObjectNavigatorandclicktheCreatebutton.Choosetobuildthedatablockmanually.AltertheQueryDataSourceTypeto‘FROM‘clausequery‘,andentertheSELECTstatementintheQueryDataSourceNameproperty.

单项选择题WhichcomponentoftheSGAstoresparsedSQLstatementsisusedforprocesssharing?（）

A.Buffercache
B.Redologbuffer
C.PrivateSQLarea
D.Librarycache
E.Rowcache