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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 backup
B
Different incremental backup
C
Cumulative backup
D
Cumulative incremental backup
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单选题Which of the following archiving methods only backs up data that has changed since the previous full backup？（）A
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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
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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
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考题
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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