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单项选择题

A system administrator periodically receives calls from users who complain about poor performance with their application. Use the following sar command output to answer the question：

Which of the following system resources need more investigation？（）

A.CPUs
B.Disk
C.Memory
D.NetworkX

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单项选择题A system administrator ran the vmstat command because of performance problems. The output of the vmstat is given： Based on the output， which of the following is insufficient？（）

A.Disk
B.CPU
C.Memory
D.NetworkX

单项选择题A system administrator ran the vmstat command because of performance problems. The output of the vmstat is given： Based on the output， which of the following is insufficient？（）

A.CPU
B.Disk
C.Memory
D.NetworkX

单项选择题Asystemadministratordecidestoreviewthesystemerrorlogafterinstallingnewhardware.Whichofthefollowingisthecorrectcommandtouse？（）

A.errpt
B.syslog
C.prtdiag
D.errlogger

单项选择题Asystemadministrator’sdailymonitoringhasrevealedafailingdiskdrive.Thedrivethatisfailing，hdisk0，isalvmmirroreddrive.Whatisthefirststepthatshouldbetakeninordertophysicallyreplacethisdrive？（）

A.Remove the physical volume from the system.
B.Remove the physical volume from the volume group.
C.Remove the physical partitions from the volume group.
D.Remove the logical volume copies from the failing drive.

单项选择题Errorloganalysisindicatesthatadiskisstartingtofailandwillneedtobereplaced.Thefailingdiskcontainsmultiplelogicalvolumeswhichspanmultipledisks.Afreediskhasbeenaddedtothefailingdisk’svolumegroup.Whichofthefollowingisthemostefficientmethodtomovethedatafromthefailingdisktothenewdisk？（）

A.Back up the data， remove the failing disk from the volume group， then restore the data to the new disk.
B.Use the migratepv command to move data from one disk to another and then remove the failing disk from the volume group.
C.Use the mirrorvg command to mirror the data to the new disk， break the mirror and then remove the failing disk from the volume group.
D.Create a new filesystem on the new disk and use the mv command to move the data to the new filesystem， and then remove the failing disk from the volume group.