You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy：   CONFIGURE RETENTION POLICY TO REDUNDANCY 3；   Which statement is true？（）  

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  A . The data file backup is done with multiple channels B . The data files is in the read-write mode after being backed up in the read only mode C . The backup was taken after the data files was taken offline-normal or is in the read only mode D . The data file backup complies with the back retention policy and the backup duplexing feature

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• You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy: CONFIGURE RETENTION POLICY TO REDUNDANCY 3; Which statement is true?（）

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• You are using RMAN to backup your ARCHIVELOG mode database. You have enabled control-file autobackups. Which files are not backed up during the RMAN backup?（）

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• After you have restored and recovered a database to a new host by using a previously performed Recovery Manager （RMAN） backup， which is the best option you would consider for the new database？（）  

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• You have enabled backup optimization for the RMAN environment. Identify two criteria on which RMAN will skip the file, if it has already been backed up.（） (Choose two.)

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• To enable faster incremental backups, you enabled block change tracking for the database.Which two statements are true about the block change tracking file? （）(Choose two.)

  A . Multiple change tracking files can be created for a database. B . The change tracking file must be created after the first level 0 backup. C . RMAN does not support backup and recovery of the change tracking file. D . The database clears the change tracking file and starts tracking changes again, after whole database restore and recovery operations.

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• You have enabled backup optimization for the RMAN environment. Identify two criteria on which RMAN will skip the file， if it has already been backed up.（）

  A .  The data file backup is done with multiple channels B .  The data files is in the read-write mode after being backed up in the read only mode C .  The backup was taken after the data files was taken offline-normal or is in the read only mode D .  The data file backup complies with the back retention policy and the backup duplexing fe ture

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• You have a computer that runs Windows 7 Professional. A USB disk is attached to the computer. You needto ensure that you can enable BitLocker To Go on the USB disk.  What should you do？（）

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• To enable faster incremental backups， you enabled block change tracking for the database. Which two statements are true about the block change tracking file？（） 

  A .  Multiple change tracking files can be created for a database. B .  The change tracking file must be created after the first level 0 backup. C .  RMAN does not support backup and recovery of the change tracking file. D .  The database clears the change tracking file and starts tracking changes again，after whole database restore and recovery operations.

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• You enabled block change tracking for faster incremental backups in your database. Which background process writes to the change tracking file？（）

  A .  RBAL B .  CKPT C .  SMON D .  PMON E .  MMON F .  CTWR G .  DBWR

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