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
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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 of the following tools should be used to report in-depth information about file fragments?()AdefragfsBistatCfilemonDfileplace
问题:单选题Which of the following commands should be used to show DNS information?()AtraceBnetstatCifconfigDnslookup
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
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Which of the following performance tools can be used to determine if a system is thrashing?()Asvmon and tprofBvmtune and schedtuneCps and schedtuneDvmstat and topas
问题:单选题The system administrator notices that there is an I/O bottleneck on one of three disks in datavg volume group. This problem disk contains the JFS log, loglv00 and one filesystem, /mydatabase. There are no other logical volumes on this disk. Which of the following options would be the best solution?()AIncrease the size of the JFS log logical volume so more transacations can be written to this log.BCreate a second, additional JFS log and have the /mydatabase logical volume point to both JFS logs.CMigrate the JFS log device to another physical disk in the same volume group.DOnly 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.
问题:单选题Which of the following tools should be used to display the location of unused physical partitions on a disk drive?()Adf -kBlspsClslv -pDfileplace
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When setting up schedules and enforcing scheduling of different types of workloads, which of the following are critical performance issues?()ADisk fragmentationBPerformance results analysisCCapacity forecasting and planningDResource contention and availability
问题:单选题Which of the following statements are FALSE concerning the defragfs command?()AThe defragfs command should not be run against file systems and logical volumes that contain mostly transitory information, such as /tmp.BThe defragfs command should not be run on a large JFS2 file system when running on a 32-bit kernel.CThe defragfs command can improve file system performance by increasing the file system’s contiguous free space.DThe defragfs command can only be run against file systems that are mounted with read-write permissions.
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Comprehensive Service Level Agreements typically do not address:()ARoles & responsibilitiesBHeadcount & budgetsCReporting policiesDPenalites
问题:单选题The nfsstat -c command shows zero badxid, but retrans and timeouts are sizeable, what is the most probable cause of the problem?()AToo many nfsd’s runningBClient and server with different buffer sizesCBridges, routers or gateways are receiving too many fragmentated packetsDToo few nfsd’s running
问题:单选题An AIX system administrator wants to reset the level at which the SIGDANGER signal is sent to processes so appropriate actions can be taken when paging space is running low. Which of the following commands is used to reset the level?()Avmtune -wBsvmon -wCschedtune -wDvmstat -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