问题:单选题Which of the following commands should be used to determine whether a logical volume is contiguous across a disk?()AlslvBlsfsClspvDfileplace
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问题:单选题When a system has both online transaction processing as well as large batch processing, which of the following common procedures will best help to improve system performance?()ABoost the priority of batch jobs.BSchedule batch runs to reduce contention with OLTP.CSchedule OS maintenance such that it includes frequent application of PTFs.DPerform incremental backups of transaction processing and full backups of batch processing.
问题:单选题Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system?()Afoo ; lsps -sBtprof -kx ; fooCiostat ; foo ; iostatDvmstat -s ; foo ; vmstat s
问题:单选题Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem?()AfilemonBistatCvmstatDiostat
问题:单选题While monitoring a system that is CPU bound, which of the following output is most likely to occur?()AABBCCDD
问题:单选题Which of the following procedures WILL NOT increase contiguous free space on a the filesystem /data1, located on /dev/lv01, that is heavily fragmented?()ARun defragfs -r /data1; defragfs /data1BRun defragfs -r /dev/lv01; defragfs /dev/lv01CBack up the filesystem by name, unmount the filesystem, recreate the filesystem by running mkfs /dev/lv01, and restoring the data from the backup.DBack up the filesystem by inode, unmount the filesystem, recreate the filesystem by running mkfs /dev/lv01, and restoring the data from the backup.
问题:单选题An AIX system, which is running a database, is having performance issues with I/O writing. The DBA has provided numbers for the HIGH and LOW watermarks for pending file writes, which will optimize the system for best performance. To set these numbers, which of the following commands would be used?()Aperfmon -h 30 -l 25BchdevCno -oDsmit chgsys
问题:单选题Which of the following commands should be used to reset the Virtual Memory Manager tuning parameters to their default values?()Aschedtune -tBvmtune -RCschedtune -rDschedtune -D
问题:单选题Comprehensive Service Level Agreements typically do not address:()ARoles & responsibilitiesBHeadcount & budgetsCReporting policiesDPenalites
问题:单选题Which of the following commands should be used to show the percentage of time that any given disk was busy?()ApsBtprofCiostatDvmstat
问题:单选题Page replacements algorithm steals file pages only when percent of RAM occupied by filepages()Afalls below minperm.Bis between minperm and maxperm.Chigher than maxperm.Dlower than maxperm.
问题:单选题The nice value is 80 in the ps listing. Which command is used to change this to a value of 100?()Arenice 100 {PID}Brenice -n 20 {PID}Crenice --20 {PID}Drenice -n -100 {PID}
问题:单选题Which of the following tools should be used to report in-depth information about file fragments?()AdefragfsBistatCfilemonDfileplace
问题:单选题Which fileset includes the commands vmstat and sar?()Abos.perfBbos.acctCbos.adt.samplesDperfagent.tools
问题:单选题Service Level Agreements (SLA) typically do not address()ANetwork access and availabilityBApplication access and availabilityCEscalation and conflict resolutionDHeadcounts and budgets
问题:单选题Which of the following packages is a prerequisite for perfpmr?()Abos.rte.controlBbos.perfCbos.adt.utilsDperfagent.tools
问题:单选题A typical example of a process # 19082 in the /proc file would be: # ls -l /proc/19082 total 0 dr-xr-xr-x 1 root system 0 Sep 15 15:12 . dr-xr-xr-x 1 root system 0 Sept 15 15:12 .. -rw------- 1 root system 0 Sept 15 15:12 as -r-------- 1 root system 128 Sept 15 15:12 cred --w------- 1 root system 0 Sept 15 15:12 ctl dr-xr-xr-x 1 root system 0 Sept 15 15:12 lwp -r-------- 1 root system 0 Sept 15 15:12 map dr-x------ 1 root system 0 Sept 15 15:12 object -r--r--r-- 1 root system 448 Sept 15 15:12 psinfo -r-------- 1 root system 1024 Sept 15 15:12 sigact -r-------- 1 root system 1520 Sept 15 15:12 status -r--r--r-- 1 root system 0 Sept 15 15:12 sysent Writing to which of the following files will allow the owner to stop a process?()AstatusBsysentCctlDas