82.You are managing an Oracle Database 11g database with the following backup strategy: 1) On Sunday

82.You are managing an Oracle Database 11g database with the following backup strategy:
1) On Sunday, an incremental level 0 tape backup is performed.
2) Monday through Saturday, a cumulative incremental level 1 tape backup is performed.
Which two statements are true regarding the backups performed? (Choose two.)
A.The backup performed in step 1 backs up all blocks that have ever been in use in the database.
B.The backup performed in step 2 copies all the blocks changed since the most recent level 0 backup.
C.The backup performed in step 1 backs up all the blocks changed since the most recent level 1 backup.
D.The backup performed in step 2 backs up all blocks that have changed since the most recent incremental backup at level 1.
答案：AB
解析：cumulative incremental指的是，它备份上一个级别0备份以来所有发生了变化的块