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 Cumulative incremental backup

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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You enable block change tracking. You issue the following command: BACKUP INCREMENTAL LEVEL 0 DATABASE; The next day, you issue the following command: BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE; Which statement about the use of the change tracking file is true?()A、RMAN reads the block change tracking file only when it performs the incremental level 0 backup.B、RMAN reads the block change tracking file when it performs both incremental backups.C、RMAN reads the block change tracking file only when it performs the incremental level 1 backup.D、RMAN does not read the block change tracking file when it performs either incremental backup.

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单选题You are managing an Oracle Database 11g database with this backup strategy:  - Every Sunday night, level 0 backup is performed.  - On Monday night and subsequent days, level 1 incremental backup is performed.  The backups are not cumulative incremental.  Which statement about Monday’s backup is true()AThe backup contains all the used blocks.BThe backup contains all the used and unused blocks.CThe backup contains blocks that have changed since the last level 0 backup.DThe backup contains blocks that have changed since the last level 1 backup taken last week.

单选题Which of the following allows an administrator to recover the MOST data?()A System imageB Incremental backupC System state restoreD Differential backup

单选题Which type of backup contains only the blocks that have changed since the last level 0 incremental backup?()Aa cumulative level 1 backupBa differential level 1 backupCa full backupDa whole backup

单选题Which type of backup backs up only data blocks modified since the most recent backup at the same level or lower?()ADifferential incremental backupBDifferent incremental backup CCumulative backup DCumulative incremental backup

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

单选题According to your backup strategy, you performed an incremental level 0 backup of your database. Which statement regarding this backup is true?()AThe backup is similar to image copy.BThe backup contains all used data blocks.CThe backup contains only unused data blocks.DThe backup contains all data blocks changed since the last incremental level 1 backup.

单选题You enable block change tracking. You issue the following command:   BACKUP INCREMENTAL LEVEL 0 DATABASE;   The next day,you issue the following command:   BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;   Which statement about the use of the change tracking file is true?()A RMAN reads the block change tracking file only when it performs the incremental level 0 backup.B RMAN reads the block change tracking file when it performs both incremental backups.C RMAN reads the block change tracking file only when it performs the incremental level 1 backup.D RMAN does not read the block change tracking file when it performs either incremental backup.

单选题You work as a database administrator for Certkiller .com. According to your backup strategy, you performed an incremental level 0 backup of your database. Which statement regarding this backup is true?()AThe backup is similar to image copy.BThe backup contains all used data blocks.CThe backup contains only unused data blocks.DThe backup contains all data blocks changed since the last incremental level 1 backup.