A. falls below minperm.B. is between minperm and maxper……

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.

单项选择题To examine the Exhibit， press the Exhibit button. Using the  ps -mo THREAD  output as shown in the exhibit， which of the following conclusions is most appropriate to draw？（）

A. This is a uniprocessor system
B. The "prog" process has a nice value of 107
C. There are two active processors on this system
D. The "prog" process will only be scheduled to run on processor 0

单项选择题WhichofthefollowingmetricsprovidedbytheiostatreportisusedtoinitiallydetermineifadiskisI Obound？（）

A. tin
B. tout
C. % idle
D. % tm_act

单项选择题WhichofthefollowingphrasesisTRUEregardingmonitoringdiskI Owithiostat？（）

A. The iostat can only be run as the root user
B. There could be zero percent I/O wait and still be an I/O bottleneck
C. Any I/O wait time displayed in output of "iostat" is an indication of severe I/O bottlenecks 
D. Running "iostat" without any arguments/parameters is sufficient for resolving I/O bottlenecks