The ‘fsck -p /dev/lv00’ command returned the following message：Not a recognized filesystem type.
What is the likely cause of the problem and how should it be resolved？（）

单项选择题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.

单项选择题Whichcommandsynchronizesorrebuildsthelogicalvolumecontrolblock，thedeviceconfigurationdatabase，andthevolumegroupdescriptorareasonthephysicalvolumes？（）

A.syncvg rootvg
B.synclvm rootvg
C.varyonvg rootvg
D.synclvodm rootvg

单项选择题Whatcanbedonetoenablethedebuginformationforfunctionstobedisplayedwhenusing‘ksh-x’todebugascript？（）

A.Run the script using ‘ksh -fx’.
B.Run the script using ‘ksh -a function -x’.
C.Edit the script and add ‘set -x’ at the beginning.
D.Edit the script and add ‘set -x’ at the beginning of each function.

单项选择题An administrator is installing AIX 6.1 on a new LPAR and the boot sequence has stalled with reference code 0c31.  What is the most likely cause？（）

A.The system is waiting for user input to define console type lft0.
B.The system is waiting for user input to define console type tty0.
C.The system is waiting for user input to define console type vty0.
D.The system is waiting for user input to define console type vsa0.

单项选择题An LPAR has hung during a reboot， reporting a 0552 LED code. What does this signify？（）

A.varyon of the paging device failed.
B.fsck of the root （/） filesystem failed.
C.varyon of the root volume group failed.
D.IPL device could not be opened or a read failed.