1Z0-053 争议题目解析703
考试科目：1Z0-053
题库版本：V13.02
题库中原题为：
703.Given below are RMAN commands to enable backup optimization and set the retention policy:
The USERS tablespace has never been backed up. You take the USERS tablespace offline on Monday.
View the Exhibit to examine the operations performed by using RMAN. Which two statements are true
about the backup of the USERS tablespace? (Choose two.)
A.It will be backed up as a part of database backup on Friday.
B.It will be backed up as a part of database backup on Tuesday.
C.It will not be backed up as a part of database backup on Wednesday.
D.The command on Sunday deletes the backup of the USERS tablespace taken on Tuesday.
Answer:AB
争议点：
网上有人说选择BC，比如“标记为正确答案，不看answer版”题库。
有人说AB，
比如：
LuiseDalian的解析：http://blog.itpub.net/17013648/viewspace-1349669/
有人说BD，
比如：
比如Riveore的解析：http://blog.****.net/rlhua/article/details/19835841
此题考察备份优化和备份保留策略。
个人认为此题Riveore的解析是对的。
初步结论：
保留争议，选择BD。