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1Z0-053 争议题目解析505

2016-03-25 16:12  AlfredZhao  阅读(608)  评论(0编辑  收藏  举报

1Z0-053 争议题目解析505

考试科目:1Z0-053
题库版本:V13.02

题库中原题为:

505.You configured the default backup device type as disk for RMAN backups. In your database, because
of business requirements, you have to take a simultaneous duplicate backup of the data files when the
RMAN BACKUP command is used.
What must you set using the RMAN CONFIGURE command to achieve this?
A. MAXSETSIZE TO 2;
B. DEVICE TYPE DISK PARALLELISM 2;
C. RETENTION POLICY TO REDUNDANCY 2;
D. DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2;
Answer: C

争议点:
网上有人说选择D,比如“标记为正确答案,不看answer版”题库。

比如:
Riveore的解析:http://blog.csdn.net/rlhua/article/details/12361883

LuiseDalian的解析:http://blog.itpub.net/17013648/viewspace-1308523/

初步结论:
选择D。