ocp認證052考題解析：1Z0-V8.02-第80題
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80. You perform differential incremental level 1 backups of your database on each working day and level 0 backup on Sundays, to tape.
Which two statements are true about differential incremental backups? (Choose two.)
A.The backup performed on Sundays contains all the blocks that have ever been used in the database.
B.The backup performed on Sundays contains all the blocks that have changed since the last level 1 backup.
C.The backup performed on each working day contains all the blocks that have changed since the last level 0 backup.
D.The backup performed on Monday contains all the blocks that have changed since the level 0 backup,and every other working day contains all the blocks that have changed since the level 1 backup.
Answer: AD
本題是說星期天進行級別為0的差異增量備份操作，這個備份會操作備份整個數據庫。
根據這個級別為0的備份，我們在星期一到星期六進行級別為1的差異增量備份操作。
使用差異備份，每天的備份將包含自一次差異備份以來發生的所有更改。
最后，在下一個星期天，進行別一次基本備份(即級別為0的增量備份)。
