You need to change the hostname and IP address of a server. Without manually editing all of the required files， which command can be run to restore a system configuration to an unconfigured state， ready to be reconfigured again restore a system configuration to an unconfigured state， ready to be reconfigured again？ （）

单项选择题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.

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

A. /etc/backup
B. /etc/ufsdump
C. /etc/dumpdates
D. /etc/fsdumpdates

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