Examine the RMAN command: RMAN> SET ENCRYPTION IDENTIFIED BY <password> ON FOR ALL TABLESPACES; RMAN> BACKUP DATABASE PLUS ARCHIVELOG; Which type of encryption is used for the backup performed by using this command? 

Answer options:

A. password-mode encryption
B. dual-mode encryption
C. transparent encryption
D. default encryption

A

Reference: http://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmbckad.htm#CEGEJABH (to make password encrypted backups)