In which two cases would you perform only consistent backup? (Choose two.)

When downtime is not tolerated, you must use online (inconsistent) backups, which require ARCHIVELOG mode to apply redo logs during recovery.

A consistent backup requires shutting down the database cleanly so all datafiles, control files, and redo logs are synchronized - this is only feasible when downtime can be tolerated.

ARCHIVELOG mode enables online inconsistent backups with redo application; it does not restrict you to consistent-only backups.

In NOARCHIVELOG mode, archived redo logs are not retained, so Oracle cannot apply redo to bring an inconsistent (online/hot) backup to a consistent state during recovery. A consistent cold backup is therefore the only type that guarantees a restorable copy.

Locally managed tablespaces relate to space management inside the database and have no bearing on whether consistent or inconsistent backups are required.

Multiplexed control files and redo logs improve redundancy but do not dictate the type of backup strategy required.

Non-multiplexed control and redo files increase risk but do not by themselves mandate consistent-only backups.