A file system has been corrupted and needs to be restored. 
Which file contains the ufsdump levels for this file system？ （）

多项选择题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.

单项选择题After you back up  export using a file system snapshot， and you have removed the snapshot， you also need to remove the backing store. If the snapshot was created with：  # mkdir  var tmp backup-snaps  # fssnap -o  bs= var tmp backup-snaps  export   Which file do you need to remove？ （）

A.A
B.B
C.C
D.D

单项选择题You need to restore some files from a file system. The file system was backed up from a snapshot.  Which command will correctly restore these files？（）

A. fssnap -i
B. fssnap -r
C. ufsrestore -i
D. snaprestore -i

单项选择题The  export home file system is running out of space on c0t0d0s7. You added a new disk to the system and it is named c1t1d0. You need to move the  export home file system to slice 7 on the new disk.  Which command is used to move the data from  export home to the new disk after booting the server to the single-user milestone？ （）

A.A
B.B
C.C
D.D

单项选择题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.