在相同的时间内，一束波长为λ的单色光在空气中和在玻璃中( )

. The JFS2 filesystem is mounted and appears intact.What is the most likely cause of the failure and how should it be resolved？（）

A.The associated JFS2 log device has failed. Check the log device and varyon the device.

B.The logical volume that hosts the snapshots is full. Increase the size of the logical volume.

C.Fifteen snapshots already exist for the given JFS2 filesystem. Delete at least one existing snapshot.

D.The volume group that hosts both the snapshots and JFS2 filesystem has lost quorum. Check and correct the integrity of the volume group.

output indicates that there is insufficientspace in the /usr filesystem. Review of the root volume group indicates there are no available physical partitions, but the /test jfs2 filesystem is only 8% used.What is the most efficient method to use the available space in the /test filesystem to apply theupdate？（）

A.Use chfs to reduce the /test filesystem

B.Use cplv to copy the /test filesystem to a smaller logical volume

C.Use migratepv l to move the /test filesystem to a different volume group

D.Backup the /test filesystem, remove it, and recreate it with a smaller size

A.The file system superblock is dirty. It can be replaced from the VGDA

B.The logical volume superblock is dirty. It can be replaced from the VGDA

C.The file system superblock is dirty. It can be replaced from the secondary copy

D.The logical volume superblock is dirty. It can be replaced from the secondary copy

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: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 whilethe filesystem is unmounted

C.Force a umount of the filesystem with ‘umount -F /dev/fslv02‘, and then run ‘fsck p /dev/fslv02‘ whilethe file system 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

A./fs.data

B./image.data

C./bosinst.data

D./install.data

A．1

B．2

C．10

D．20

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.

A、the size of the room: how large is the room？

B、the size of the audience: how many listeners are there？

C、the level of background noise: is it noisy or quiet？

D、the availability of a microphone: can you use a microphone？

A．who/filesystem

B．lsfs/filesystem

C．fuser/filesystem

D．umount-f/filesystem