下列关于经济周期的说法中正确的有()。

.- The recovery window is set to 7 days in RMAN.- The most recent backup to disk for the TOOLS tablespace was taken on November 3, 2007.- The TOOLS tablespace is read-only since November 4, 2007.On November 23, 2007, you issue the RMAN command to back up the database to disk.Which statement is true regarding the backup of the TOOLS tablespace？（）

A. The RMAN backup fails because the TOOLS tablespace is read-only

B. The RMAN skips the backup of the tablespace because backup optimization is enabled

C. The RMAN makes backup because optimization can be enabled only for backups to disk

D. The RMAN makes the backup because no backup of the tablespace exists within the seven day window

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

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

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

A. The RMAN backup fails because the TOOLS tablespace is read-only

B. The RMAN skips the backup of the tablespace because backup optimization is enabled

C. The RMAN makes backup because optimization can be enabled only for backups to disk

D. The RMAN makes the backup because no backup of the tablespace exists within the seven day window

ing1.There are multiple scheduled tasks configure on TestKing1. One task is a scheduledbackup job. You need to temporarily disable the backup job from running so thatyou can troubleshoot a problem. You must not interfere with any other scheduledtasks.You need to disable the scheduled backup job. You want to achieve this goal byusing the minimum amount of administrative effort.What should you do？（）

A. Pause the Task Scheduler service.

B. Delete the scheduled backup job. Re-create the backup after you finish troubleshooting.

C. Modify the properties of the scheduled backup job and clear the Enabled check box.

D. Run the ntbackup /p command on the server.

If you find such a flower, you are ______ enabled to have several days of good luck.

A．likely

B．assuredly

C．inevitably

D．supposedly