Youwererecentlyhiredbyanorganizationasadatabaseadministrator.Youareaskedtofindoutwhetherthecurrentlyfunctionallistenerprocess，namedL1，hasbeenpasswordprotectedornot.Youarenotfamiliarwiththefilesystemoftheneworganization.Howwouldyouaccomplishthetask？（）
A. byusingtheSTATUScommandoftheListenercontrolutility
B. byusingtheSTATUSL1commandoftheListenercontrolutility
C. byusingtheSHOWRULEScommandoftheListenercontrolutility
D. byusingtheSETPASSWORDcommandoftheListenercontrolutility
E. bysearchingforthePASSWORD_LISTENERentryinthelistener.orafile
查看答案
三段论的式有（）个。
A. 64
B. 128
C. 256
D. 512
Adatafilebecamecorruptedinyourdatabaseduetobadsectorsonthedisk.Becauseofcorruption，youlostalltheimportanttablesinthatdatafile.Whichmethodwouldyouuseforrecovery？（）
A. flashbackallthetablesinthedatafile，onebyone
B. restorethedatafiletoanewlocationandperformamediarecovery
C. flashbackthedatabasethereisnoneedtorestorethedatafile
D. restorethedatafilefromthemostrecentbackupandflashbackthedatabase
WhilecreatingaschedulerwindowusingtheDBMS_SCHEDULERpackage，auserloggedinasDBMGRgetstheerrormessageinsufficientprivileges.Whichtwocommandswouldyouusetoresolvethiserror？（）
A. GRANTdbaTOdbmgr
B. GRANTconnectTOdbmgr
C. GRANTresourceTOdbmgr
D. GRANThs_admin_roleTOdbmgr
E. GRANTmanageschedulerTOdbmgr
下列对实践的理解错误的是（）
A. 实践是物质世界分化与统一的现实基础
B. 实践是人能动地改造客观世界的精神性活动
C. 实践是联系主体与客体的中介，是检验认识活动是否为真理的唯一标准
D. 实践是人的存在方式
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