When setting up schedules and enforcing scheduling of different types of workloads， which of the following are critical performance issues？（）

单项选择题To examine the Exhibit， press the Exhibit button. Using the output of  lslv  as shown in the exhibit， and given that logical volume lv00 is only located on hdisk0， which of the following conclusions is most appropriate to draw？（）

A. Logical volume lv00 is fragmented on hdisk0
B. Logical volume lv00 size cannot be increased
C. Logical volume lv00 is used for paging space on hdisk0
D. Logical volume lv00 is the only logical volume on hdisk0

单项选择题Thenicevalueis80inthepslisting.Whichcommandisusedtochangethistoavalueof100？（）

A. renice 100 {PID}
B. renice -n 20 {PID}
C. renice --20 {PID}
D. renice -n -100 {PID}

单项选择题PagereplacementsalgorithmstealsfilepagesonlywhenpercentofRAMoccupiedbyfilepages（）

A. falls below minperm.
B. is between minperm and maxperm.
C. higher than maxperm.
D. lower than maxperm.

单项选择题WhichofthefollowingproceduresWILLNOTincreasecontiguousfreespaceonathefilesystem data1，locatedon dev lv01，thatisheavilyfragmented？（）

A. Run defragfs -r /data1； defragfs /data1
B. Run defragfs -r /dev/lv01； defragfs /dev/lv01
C. Back up the filesystem by name， unmount the filesystem， recreate the filesystem by running mkfs /dev/lv01， and restoring the data from the backup.
D. Back up the filesystem by inode， unmount the filesystem， recreate the filesystem by running mkfs /dev/lv01， and restoring the data from the backup.

单项选择题ThesystemadministratornoticesthatthereisanI Obottleneckononeofthreedisksindatavgvolumegroup.ThisproblemdiskcontainstheJFSlog，loglv00andonefilesystem， mydatabase.Therearenootherlogicalvolumesonthisdisk.Whichofthefollowingoptionswouldbethebestsolution？（）

A. Increase the size of the JFS log logical volume so more transacations can be written to this log.
B. Create a second， additional JFS log and have the /mydatabase logical volume point to both JFS logs.
C. Migrate the JFS log device to another physical disk in the same volume group.
D. Only one JFS log device for each volume group can be used.  Use the migratepv command to move the JFS log device to an empty disk in another volume group.