单选题Which phrase best describes RMAN multiplexed backup sets？（）A Stripes a single backup set across multiple channels.B Identical copies of backup pieces within a backup set.C Multiple backup sets with multiple channels configured.D Simultaneous reads from
题目
单选题
Which phrase best describes RMAN multiplexed backup sets？（）
A
Stripes a single backup set across multiple channels.
B
Identical copies of backup pieces within a backup set.
C
Multiple backup sets with multiple channels configured.
D
Simultaneous reads from multiple files and writes into the same backup piece.