单选题A system administrator is unable to unmount a file system. Which is the appropriate command to determine who or what is accessing the file system？（）A who /filesystemB lsfs /filesystemC fuser /filesystemD umount -f /filesystem

第1题：

An administrator is attempting to recover a filesystem that fails to manually unmount. The fsck command produces the following output： The current volume is： /dev/fslv02 File system is currently mounted.   Invalid file system size in the primary superblock. Invalid file system size in the secondary superblock.  Primary superblock is corrupt. Secondary superblock is corrupt.   fsck： 0507-018 Superblock is corrupt and cannot be repaired. Both primary and secondary copies are corrupt.Cannot continue tried to mount  Which steps will resolve the problem？（）

• A、Reboot the server into maintenance mode and run ‘fsck’ with the ‘-p’ parameter while the filesystem is mounted.
• B、Reboot the server into maintenance mode and run ‘fsck’ with the ‘-y’ parameter while the filesystem is unmounted.
• C、Force a umount of the filesystem with ‘umount -F /dev/fslv02’， and then run ‘fsck -p /dev/fslv02’ while the filesystem is unmounted.
• D、Force a umount of the filesystem by varying off the hosting volume group and then varyon the volume group. This will permit ‘fsck -y’ to be run against the failing filesystem.

第2题：

A system administrator has an existing mksysb image, but would like to modify the image.data file on the mksysb before installing it on a system. Which of the following procedures is most appropriate to perform?（）

• A、Create a new image.data file and recreate the mksysb image.
• B、Use the dd command to replace the image.data file on the mksysb tape.
• C、Use the tctl command to palce the new image.data file on the mksysb tape.
• D、Place the new image.data file on a diskette that will be road during the installation of the mksysb.

第3题：

第4题：

A system administrator created a /etc/exports file on server "Alpha" and entered a filesystem to be exported to server "Bravo." However， the remote servers are unable to mount the filesystems. What does the system administrator need to do？（）

• A、Use the exportfs command on server "Alpha" to export the filesystem
• B、Use the showmount command on server "Bravo" to import the filesystem
• C、Use the startsrc command on server "Bravo" to refresh the NFS daemons
• D、Use the chfs command on server "Alpha" to change the filesystem type to NFS

第5题：

While using the smit install_remove menus to remove some filesets on an AIX 5.3 server， a system administrator notices the /usr filesystem is now unnecessarily large.  Which of the following actions will reduce the size of the /usr filesystem （）

• A、Backup， unmount， remove， recreate and restore the filesystem.
• B、Boot from mksysb tape and select Shrink filesystems on restore.
• C、Unmount， run defragfs /usr and the reducefs -size n /usr commands.
• D、Update the /image.data file with the desired size for /usr and reboot the system.

第6题：

Which command（s） will result in the smallest sized backup of the text files contained in the /staticFS filesystem？（）  

• A、tar -cvf file_system.tar /staticFS ； gzip file_system.tar
• B、tar -xvf /staticFS file_system.tar ； gzip file_system.tar
• C、tar -cvf /staticFS file_system.tar ； compress file_system.tar
• D、tar -xvf file_system.tar /staticFS  ； compress file_system.tar

第7题：

The df command indicates that a filesystem is full， however， the du command indicates that not all space is allocated.  How would the system administrator isolate the discrepancy（）

• A、Use the fuser command to identify deleted but open files.
• B、Use the ipcs command to view orphan shared memory segments.
• C、Use the defrag command to determine if the filesystem is fragmented.
• D、Use the topas command to identify processes using the most system resources.

第8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

第9题：

Which attribute of a JFS filesystem can NOT be changed after the filesystem is created？（）

• A、The size of the filesystem
• B、The placement of the filesystem
• C、The mount point of the filesystem
• D、The number of bytes per inode

第10题：

A system administrator is unable to unmount a file system. Which is the appropriate command to determine who or what is accessing the file system？（）

• A、who /filesystem
• B、lsfs /filesystem
• C、fuser /filesystem
• D、umount -f /filesystem