Oracle Database 12c Advance Adminstration1z0-063 Test 3

Explanation:
A: Performing Oracle database backups using RMAN requires RMAN user preauthorization within OSB D: The preauthorized Oracle Secure Backup user must also be assigned to an Oracle Secure Backup class possessing the following rights:
access Oracle backups (set to owner, class, or all)perform Oracle backups and restores F: The preauthorized Oracle Secure Backup user must be mapped to operating system privileges to access the files to be backed up or restored. the preauthorized Oracle Secure Backup user can perform RMAN operations only on the host where it has access to files.
References: https://docs.oracle.com/cd/E16926_01/doc.121/e16564/osb_rman_backup.htm#OBADM199