Which of the following options would you choose to implement controlled access using remote authentication for your networks？（）

单项选择题WhichoneofthefollowingfilescontainsrecordsthatdonotmeetthespecifiedloadcriteriaintheSQL*Loadercontrolfile？（）

A.Log file
B.Discard file
C.Parameter file
D.Bad file

单项选择题IfyouCROSSCHECKthebackuppiecethatwaspreviouslymarkedasEXPIREDbutisnowavailable，whatwouldthestatusofthisbackuppiecebeintheRMANrepository？（）

A.EXPIRED
B.AVAILABLE
C.UNAVAILABLE
D.ACCESSIBLE

单项选择题Asaresultofamediafailure，thecurrentonlineredologgroupiscorrupted.Thedatabasecrashes，asthecurrentonlinegroupisinaccessible.Whichtypeofincompleterecoveryareyoumostlikelytoperform？（）

A.Cancel-based
B.Recovery using a backup control file
C.Time-based
D.Change-based

单项选择题WhichOraclebackgroundprocessisresponsibleforprovidinginformationabouttheinstancenameassociatedwiththeservicehandlersandservicestothelistener？（）

A.PMON
B.SMON
C.LGWR
D.CKRT

单项选择题Whichofthefollowingoptionsenablesausertogetauthenticatedthoughasinglepasswordinsteadofusingmultiplepasswords？（）

A.Wallet Manager
B.Radius
C.Oracle Internet Directory
D.None of the above