问题

Which two statements are true about th

Which two statements are true about the duplexing of the backups taken by RMAN? （）(Choose two.)

A It's only supported for the backups performed on the tape
B It is not supported for backup operations that produce image copies
C Duplex backups need a parallelism for the device to be equal to number of copies
D Duplex backups can be performed to either disk or tape, but cannot be performed on tape and disk simultaneously

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分类：1Z0-053题库

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