多项选择题
A.ARCHIVELOG mode.
B.NOARCHIVELOG mode.
C.Open database backups.
D.Consistent whole backups.
单项选择题 Managementhasdecidedthatthedatabasemustbeavailable24hoursaday，7daysaweek.Giventhisrequirement，whichtypeofbackupisrequired？（）
多项选择题 OracleNetConfigurationAssistantisapost-installationtoolthatconfiguresbasicnetworkcomponentsafterinstallation.Whichfourcomponentsareincludedintheconfiguration？（）
多项选择题 Whichtwofiletypesmustbeincludedinacloseddatabasebackuptakenwithoperatingsystemcommands？（）