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Which type of backup contains only the blocks that have changed since the last level 0 incremental backup?（）
- A、a cumulative level 1 backup
- B、a differential level 1 backup
- C、a full backup
- D、a whole backup
参考答案
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The backup contains only unused data blocks.D
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The backup contains all the used and unused blocks.C
The backup contains blocks that have changed since the last level 0 backup.D
The backup contains blocks that have changed since the last level 1 backup taken last week.
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单选题Which type of backup contains only the blocks that have changed since the last level 0 incremental backup?（）A
a cumulative level 1 backupB
a differential level 1 backupC
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Hot backupB
Online backupC
consistent backupD
incremental backupE
inconsistent backup
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单选题Which type of backup backs up only data blocks modified since the most recent backup at the same level or lower？（）A
Differential incremental backupB
Different incremental backupC
Cumulative backupD
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单选题Which command is used to configure RMAN to perform a compressed backup for every backup executed？（）A
BACKUP AS COMPRESSED BACKUPSET DATABASEB
BACKUP AS COMPRESSED COPY OF DATABASEC
CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSETD
CONFIGURE DEVICE TYPE DISK BACKUP TYPE COMPRESS E
BACKUP DATABASE COMPRESS
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单选题Which type of backup contains only the blocks that have changed since the last level 0 incremental backup？（）A
a cumulative level 1 backupB
a differential level 1 backupC
a full backupD
a whole backup
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