1Z0-053 争议题目解析510

1Z0-053 争议题目解析510

考试科目：1Z0-053
题库版本：V13.02

题库中原题为：

510.You executed the following command in Recovery Manager (RMAN):
RMAN>REPORT NEED BACKUP days 3;
What is the output of this command?
A. a list of files that require a backup within three days
B. a list of files requiring more than 3 days of archive logs to apply
C. a list of files that RMAN recommends be backed up only once in every three days, based on low
volatility
D. a list of files for which a backup has already been performed in the last three days and which is
required to be backed up again based on the high number of transactions performed on them
Answer: A

争议点：
网上有人说应该选择B。

比如：
http://blog.itpub.net/17013648/viewspace-1308528/
http://blog.csdn.net/rlhua/article/details/12363701

REPORT NEED BACKUP DAYS n
Displays files that require more than n days' worth of archived redo log files for recovery

初步结论：
选择B。