單項選擇題

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

你可能感興趣的試題

Which of the following best describes a full backup? （）

A.All datafiles of a database
B.All datafiles, archive logs, and control files
C.All datafiles and control files
D.All the used blocks in a datafile

單項選擇題

How is block-change tracking enabled?（）

A.With alter database enable block change tracking
B.With alter system enable block change tracking
C.With an init.ora parameter change
D.With an spfile parameter change