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单选题 You created a snapshot of the /data2 filesystem as follows:   # fssnap -F ufs -o bs=/data2/snap /data2   But, the system responds with the following error: snapshot error: Invalid backing file path   What is the problem? ()

A

 The /data filesystem does not exist.

B

 This message indicates that the /data2/snap directory does not exist.

C

 The name of the Backing Store is incorrect, it should be /dev/fssnap/0

D

 This message indicates that you cannot have the backing store file on the same filesystem as the filesystem being snapped.

单选题 While selecting files during an interactive restore with ufsrestore, you are interrupted by a junior  administrator before you can complete the file selection process and start the restore. After answering the administrator’s question, you realize that you have forgotten which files you had already selected for the restore.  How can you determine which files are already marked for extraction and restore? ()

A

 You can use the ls subcommand of ufsrestore.

B

 You can use the add subcommand of ufsrestore.

C

 You can use the select subcommand of ufsrestore.

D

 You can view the selected files as they are marked with a plus sign (+) in the list that is permanently displayed in the upper half of the interactive ufsrestore screen view.

多选题 A corrupted file system is now repaired and back in use. Some, but not all of the files within the file  systems have been deleted. The only backup of this file system is a month-old tar archive. This archive will need to be restored as root.  Which two statements correctly describe the effects of the restore operation?()

A

 Files found in the file system that are also on tape will NOT be overwritten.

B

 The missing files, present on the backup tape, are restored to the file system with the data as it was when the backup was taken.

C

 The access times are preserved by tar and will reflect the time when a user last accessed the data.

D

 The modification time on the files restored by tar will be preserved and will reflect the time the file was last modified before the backup, NOT the time of the restore operation.

单选题 A snapshot of the /export/project file system has been taken. Prior to backing up the file system, you need to check to see if certain files are on the snapshot. The snapshot needs to be mounted to check for these files.  Which command will mount the snapshot? ()

A

 mount -F ufs -o ro /dev/fssnap/0 /check

B

 mount -F ufs -o rw /dev/fssnap/0 /check

C

 mount -F ufs -o ro /export/project /check

D

 mount -F ufs -o rw /export/project /check

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