OCP CBT Question 638

Please solve the following question.

You are implementing an RMAN backup strategy for a large production database. You perform a full backup on Sunday. For daily backups (Monday-Saturday), you want to minimize the backup duration by backing up only the blocks that have changed since the *last level 0 or level 1 backup*. Which RMAN incremental backup strategy should you use?

Your current strategy involves:
BACKUP INCREMENTAL LEVEL 1 DATABASE; -- Monday-Saturday```

INCREMENTAL LEVEL 1 DIFFERENTIAL

INCREMENTAL LEVEL 1 CUMULATIVE

INCREMENTAL LEVEL 0 CUMULATIVE

INCREMENTAL LEVEL 0 DIFFERENTIAL