The ORCL database has CONTROL FILE AUTOBACKUP and BACKUP OPTIMIZATION enabled.
TBS1 and TBS2 are the only user-defined tablespaces in ORCL.
USER1.EMP is a table in TBS1.
Examine these commands:
From which files are modified blocks backed up?
A. SYSTEM, SYSAUX, UNDO, and TBS1 only
B. SYSTEM and SYSAUX only
C. SYSTEM, SYSAUX, UNDO, and TBS2 only
D. SYSTEM, SYSAUX and UNDO only
E. SYSTEM, SYSAUX, UNDO, TEMP, TBS1 and TBS2
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