单项选择题
Which type of backup must be performed first with an incremental backup？（）
A. Level 1
B. Level 0
C. Level 2
D. Level 3
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相关考题
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单项选择题
Whichtypeofbackupbacksuponlydatablocksmodifiedsincethemostrecentbackupatthesamelevelorlower？（）
A. Differential incremental backup
B. Different incremental backup
C. Cumulative backup
D. Cumulative incremental backup -
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
