OCP-1Z0-052-V9.02-115题

115.Which of these is true about undo tablespace?
A. Undo tablespace is a temporary tablespace
B. Undo tablespace has only one datafile
C. Undo tablespace has a datafile which is reused in cyclic manner
Answer: A

这道题，在我考试的我选择的是A，我的52是100%。