判断题为了使一个控件在运行时无效,应对控件的visible 属性进行设置。( )

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3.安全技术自身面临哪些重大变革()

A.0时代,通信网变化巨大,安全防护也需要进行相应变革

4.单项选择题现网900M、1800M基站设备,机柜电源输入电压是()

A.380V
B.220V
C.负48V
D.24V

5.单项选择题在楼顶安装高度大于4m的产品应(),在搭建加高过程中应做好加固和斜拉等安全措施。

A.搭人字梯子
B.搭脚手架安装(采用简易门型脚手架)
C.搭拔杆及卷扬机安装
D.工人相互叠加安装

6.WhichtwoaretheusesoftheASMmetadatabackupandrestore(AMBR)feature?()

A.ItcanbeusedtobackupalldataonASMdisks.
B.ItcanbeusedtorecoverthedamagedASMdiskgroupalongwiththedata.
C.ItcanbeusedtogatherinformationaboutapreexistingASMdiskgroupwithdiskpaths,diskname,failuregroups,attributestemplates,andaliasdirectorystructure.
D.Itcanbeusedtore-createtheASMdiskgroupwithitsattributes.

7.WhataretwoadvantagesthattheCiscoSA520all-in-oneUTMsecuritydevicehasoverimplementingatypicalrouterinasmallbusinessnetwork?()

A.CiscoIntrusionPreventionSystem
B.higherbandwidth
C.virtualprivatenetworks
D.accesscontrollists
E.URLfiltering

8.Wherecansubqueriesbeused?()

A.fieldnamesintheSELECTstatement
B.theFROMclauseintheSELECTstatement
C.theHAVINGclauseintheSELECTstatement
D.theGROUPBYclauseintheSELECTstatement
E.theWHEREclauseinonlytheSELECTstatement
F.theWHEREclauseinSELECTaswellasallDMLstatements

9.YouworkasadatabaseadministratorforSupportcenter.cn.YourdatabaseisopenedinNOARCHIVEKLOGmode.YoudecidetoplacethedatabaseinARCHIVELOGmode.Howwouldyoudothis?()

A.ExecutetheALTERDATABASEARCHIVELOGstatement
B.SelectARCHIVELOGoptioninthedatabasecontrolandrestartthedatabasetoapplythechanges.
C.Shutdownandstarttheinstance,andintheNOMOUNTstateexecutetheALTERDATABASEARCHIVELOGstatement.
D.Shutdownandstarttheinstance,mountthedatabase,thenexecutetheALTERDATABASEARCHIVELOGstatement.

10.YouworkasadatabaseadministratorforSupportcenter.cn.Yourlistenerprocess,L1,iscurrentlylisteningtothreedatabases:CertKINDB04,SupportCenterDB05andSupportCenterDB06.UsingDatabaseConfigurationAssistant(DBCA)youcreateonemoredatabase,SupportCenterDB07,andenabledynamicregistration.WhichtwocommandsofListenerControlUtility(lsnrct1)wouldyouusetodeterminewhetherthedynamicregistrationoccurredforthedatabase,SupportCenterDB07,withtheL1listenerprocess?()
A.SHOWL1
B.SPAWNL1
C.STATUSL1
D.SERVICESL1
E.STATUSLISTENER
F.SERVICESLISTENER
G.SHOWcurrent_listener

A.cn.Yourlistenerprocess,L1,iscurrentlylisteningtothreedatabases:CertKINDB04,SupportCenterDB05andSupportCenterDB06.UsingDatabaseConfigurationAssistant(DBCA)youcreateonemoredatabase,SupportCenterDB07,andenabledynamicregistration.WhichtwocommandsofListenerControlUtility(lsnrct1)wouldyouusetodeterminewhetherthedynamicregistrationoccurredforthedatabase,SupportCenterDB07,withtheL1listenerprocess?()
A.SHOWL1
B.SPAWNL1
C.STATUSL1
D.SERVICESL1
E.STATUSLISTENER
F.SERVICESLISTENER
G.SHOWcurrent_listener