单项选择题
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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相关考题
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单项选择题
Whichisthecorrectcommandtobackupthedatabase，backupthearchivedredologs，andthenremovethebacked-uparchivedredologs？（）
A. backup database
B. backup database and archivelogs
C. backup database plus archivelogs
D. backup database plus archivelog delete input
E. backup database and archivelog delete input -
单项选择题
Compressedbackupsworkwithwhichofthefollowingcommands？（）
A. copy as backup
B. backup as copy
C. backup
D. copy -
单项选择题
Consider the following command： Backup database plus archivelog delete input； How many backup sets would be created by this command if the following were true：（） Control-file a NN uto backups were enabled. NN The size of backup sets was not restricted. NN One channel was allocated.
A. 1
B. 2
C. 3
D. 4
E. 5
