BACKUP状态的作用（）。

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• BACKUP状态时干燥器的平衡压设定值一般设为（）。

  A . A、-10BAR B . B、-10mmAg C . C、-10mmH2O D . D、–10G

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• 当Master停止运行VRRP的时候，Master会立刻发出一个VRRP通告消息，在该消息中，Priority字段设置为（）；当Backup收到该消息后，立刻从Backup状态转为Master状态。

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• You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database.Which two statements are true about this backup operation?（）

  A . Backup compression should be enabled B . Parallelism for the channel should be set to 2 C . All the files must be backed up as backup sets D . The backup may be stored either on disk or on media with media manager

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• BACKUP状态时干燥器的平衡压设定值一般设为-10mmH2O。

  A . 正确 B . 错误

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• Which backup option defines a user-defined name for a backup? （）

  A . FORMAT B . NAME C . TAG D . FORMAT U%

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• Which command is used to configure RMAN to perform a compressed backup for every backup executed？（）

  A .  BACKUP AS COMPRESSED BACKUPSET DATABASE B .  BACKUP AS COMPRESSED COPY OF DATABASE C .  CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET D .  CONFIGURE DEVICE TYPE DISK BACKUP TYPE COMPRESS  E .  BACKUP DATABASE COMPRESS

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• What feature comes into play to help ensure the completion of the backup should one of three backup devices fail during a backup that is using three different channels?（）

  A . Channel failover B . Restartable backups  C . Rescheduable backups  D . Automatic backup recovery  E . Channel recovery

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• You run the following commands：   RMAN> list expired backup； RMAN> delete expired backup；   What will happen to the backup set pieces associated with the backups that appear in the list expired backup command？（）  

  A .  They will be renamed. B .  Nothing will happen to them. The backup set pieces do not exist. C .  They will be deleted immediately since they are not in the flash recovery area. D .  You will need to manually remove the physical files listed in the output of the commands. E .  They will become hidden files and removed 10 days later.

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• You perform a backup using the following BACKUP command：   RMAN> BACKUP AS COMPRESSED BACKUPSET DATABASE；   Which statement is true of this command？（）  

  A .  A different procedure is required to restore a database from compressed backups B .  The AS COMPRESSED clause of the BACKUP command provided by RMAN is used to create compressed  backup sets and image copies. C .  Using this command to create backups minimizes the bandwidth consumed D .  Using this command to create backups improves the performance of the backup proce

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• You are using the backup scheduler in Enterprise Manager （EM） to schedule a backup of your database. Which type of script does the backup scheduler generate？（）

  A . SQL script B . PL/SQL script C . Operating System （OS） script D . Enterprise Manager （EM） script E . Recovery Manager （RMAN） script

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• 干燥器产生“Backup”的原因？

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• 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.

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• 根据以下的配置，请判断当主接口serial0出故障后，哪一个备份接口最先被启用。（） Quidway（config-if-Serial0）#backup interfaceserial130 Quidway（config-if-Serial0）#backup interfaceserial240 Quidway（config-if-Serial0）#backup logic-channel350 Quidway（config-if-Serial0）#backup logic-channel235

  A . serial1 B . serial2 C . logic-channel2 D . logic-channel3

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• You perform a backup using the following BACKUP command: RMAN> BACKUP AS COMPRESSED BACKUPSET DATABASE,Which statement is true of this command?（）

  A . A different procedure is required to restore a database from compressed backups  B . The AS COMPRESSED clause of the BACKUP command provided by RMAN is used to create compressed backup sets and image copies.  C . Using this command to create backups minimizes the bandwidth consumed. D . Using this command to create backups improves the performance of the backup process&e

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• BACKUP C：*.*A：/S的功能是（）。

  A . 把C盘上的全部文件备份到A盘上 B . 把C盘根目录下的全部文件备份到A盘上 C . 把C盘当前目录90年5月7日之后修改的全部文件备份到A盘上 D . 把C盘当前目录90年7月5日之后修改的全部文件备份到A盘上

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• You are using the backup scheduler in Enterprise Manager （EM） to schedule a backup of your database. Which type of script does the backup scheduler generate？ （）

  A . SQL script B . PL/SQL script C . Operating System （OS） script D . Enterprise Manager （EM） script E . Recovery Manager （RMAN） script

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• You want to take a complete database backup using RMAN. The backup should consist onlythe used blocks from your database. Which two statements are true about this backup operation？（） 

  A .  Backup compression should be enabled B .  Parallelism for the channel should be set to 2 C .  All the files must be backed up as backup sets D .  The backup may be stored either on disk or on media with media manager

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• VRRP中当路由器处于Backup状态时它将会做下列工作中的哪一项（）

  A . 接收Master发送的VRRP组播报文，从中了解Master的状态 B . 对虚拟IP地址的ARP请求，不做响应 C . 丢弃目的MAC地址为虚拟MAC地址的IP报文，丢弃目的IP地址为虚拟IP地址的IP报文 D . 以上全部

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• BACKUP状态的作用是保证产品产量。

  A . 正确 B . 错误

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• 如何显示Backup命令备份的文件？

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• You are using RMAN to perform a closed database backup of your database. You issue these RMAN commands： STARTUP MOUNT； BACKUP  FORMAT ’/BACKUP/df_%d_%s_%p.bus’  DATABASE filesperset = 2；  Which components are included in the backup？（）

  A . Only the data files. B . Only the data files and the online logs. C . The data files， control files， and the online logs. D . The data files and control files， but not the online logs.

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• 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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• 简述BACKUP和COPY命令的区别？

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• You perform a backup using the following BACKUP command: RMAN> BACKUP AS COMPRESSED BACKUPSET DATABASE; Which statement is true of this command?（）

  A . A different procedure is required to restore a database from compressed backups B . The AS COMPRESSED clause of the BACKUP command provided by RMAN is used to create compressed backup sets and image copies. C . Using this command to create backups minimizes the bandwidth consumed D . Using this command to create backups improves the performance of the backup proce

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