Which of the following options enables a user to get authenticated though a single password instead of using multiple passwords？（）

单项选择题Whichofthefollowingrolesmustbegrantedtoausertoperformafulldatabaseimport？（）

A.CONNECT
B.IMP_FULL_DATABASE
C.FULL_EXPORT_PRIVS
D.RESOURCE
E.FULL_IMPORT_PRIVS

单项选择题WhichparameterallowsSQL*Loadertoloaddataintoatablewiththeindexesintheunusablestate，priortotheloadoperation？（）

A.INDEXES
B.SKIP_INDEXES_MAINTENANCE
C.SKIP_UNUSABLE_INDEXES
D.RESUMABLE
E.INDEXES_UNUSABLE

单项选择题Whichoneofthefollowingparametersmustbespecifiedwhenexportingobjectsthathasintegrityconstraintsreferencingobjectsthatarecurrentlybeingaccessedbyotherusers？（）

A.IGNORE=Y
B.DIRECT=Y
C.CONSISTENT=Y
D.BUFFER=Y

单项选择题Whichofthefollowingrolesprovidestheprivilegestomaintainandquerytherecoverycatalogschema？（）

A.EXECUTE_CATALOG_ROLE
B.CONNECT
C.RESOURCE
D.RECOVERY_CATALOG_OWNER
E.RECOVERY_CATALOG_USER

单项选择题WhichofthefollowingfilescannotbecatalogedusingtheCATALOGcommand？（）

A.Data files
B.Control files
C.Archived log files
D.Files storing RMAN scripts