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？（）A The backup is similar to image copy.B The backup contains all used data blocks.C The backup contains only

第1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（）

• A、The backup contains all the used blocks.
• B、The backup contains all the used and unused blocks.
• C、The backup contains blocks that have changed since the last level 0 backup.
• D、The backup contains blocks that have changed since the last level 1 backup taken last week.

第2题：

Which type of backup contains only the blocks that have changed since the last level 0 incremental backup?（）

• A、a cumulative level 1 backup
• B、a differential level 1 backup
• C、a full backup
• D、a whole backup

第3题：

You performed the RMAN database backup with the KEEP option.Which two statements are true about this backup?（） (Choose two)

• A、The KEEP option overrides the configured retention policy
• B、The KEEP option is an attribute of an individual backup piece
• C、The backup contains only data files and archived redo log files
• D、The backup contains data files, the server parameter file and the control file even if the control file auto backup is disabled

第4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.

第5题：

You are managing an Oracle Database 11g database with the following backup strategy：  1.On Sunday， an incremental level 0 tape backup is performed.  2.Monday through Saturday， acumulativeincremental level 1 tape backup is performed.  Which two statements are true regarding the backups performed（）

• A、The backup performed in step 1 backs up all blocks that have ever been in use in the database. 
• B、The backup performed in step 2 copies all the blocks changed since the most recent level 0 backup.
• C、The backup performed in step 1 backs up all the blocks changed since the most recent level 1 backup.
• D、The backup performed in step 2 backs up all blocks that have changed since the most recent incremental backup at level 1.

第6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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第13题：

You are managing an Oracle Database 11g database with the following backup strategy：1） On Sunday， an incremental level 0 tape backup is performed.2） Monday through Saturday， a cumulative incremental level 1 tape backup is performed. Which twostatements are true regarding the backups performed（）

• A、The backup performed in step 1 backs up all blocks that have ever been in use in the database.
• B、The backup performed in step 2 copies all the blocks changed since the most recent level 0 backup.
• C、The backup performed in step 1 backs up all the blocks changed since the most recent level 1 backup.
• D、The backup performed in step 2 backs up all blocks that have changed since the most recent incrementalbackup at level 1

第14题：

Examine the following command used to perform incremental level 0 backup：   RMAN> BACKUP INCREMENTAL LEVEL 0 DATABASE；   To enable the block change tracking， after the incremental level 0 backup you issued the following command：   SQL> ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ’/mydir/ rman_change_track.f’；To perform incremental level 1 cumulative backup， you issued the following command：   RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE；   Which two statements are true in the above situation？（）

• A、 The block change tracking data will be used only from the next incremental 0 backup.
• B、 The incremental backup will use change tracking data for accomplishing the backup.
• C、 The incremental backup will not use change tracking data for accomplishing the backup.
• D、 The block track file will scan all the blocks and create bitmap for all the blocks backed up in the level 0 backup.

第15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？（）

• A、The backup is similar to image copy.
• B、The backup contains all used data blocks.
• C、The backup contains only unused data blocks.
• D、The backup contains all data blocks changed since the last incremental level 1 backup.

第16题：

You perform differential incremental level 1 backups of your database on each working day and level 0 backupon Sundays， to tape. Which two statements are true about differential incremental backups（）

• A、The backup performed on Sundays contains all the blocks that have ever been used in the database.
• B、The backup performed on Sundays contains all the blocks that have changed since the last level 1 backup.
• C、The backup performed on each working day contains all the blocks that have changed since the last level 0 backup.
• D、The backup performed on Monday contains all the blocks that have changed since the level 0 backup， and every other working day contains all the blocks that have changed since the level 1 backup

第17题：

According to your backup strategy， you performed an incremental level 0 backup of your database. Which statement regarding this backup is true？（）

• A、The backup is similar to image copy.
• B、The backup contains all used data blocks.
• C、The backup contains only unused data blocks.
• D、The backup contains all data blocks changed since the last incremental level 1 backup.

第18题：

You want to perform a backup of your database to tape. Which backup format can you use？（）

• A、backup set only
• B、image copy only
• C、only user-managed backup
• D、both image copy and backup set
• E、only incremental image copy backup

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