问题:单选题The system administrator has been getting complaints about slow performance from the server. After running vmstat the administrator notices average readings that show the free list (fre) approaching zero, as well as page-in (pi) and page-out (po) values to be high. Furthermore, the applications running are essential to daily business operations. Which of the following recommendations would provide the best overall improvement?()AIncrease physical diskBIncrease number of CPU’sCIncrease physical memoryDIncrease number of servers
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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The nice value is 60 in the ps listing. Which command is used to change this to a value of 20?()Arenice -n -20 {PID}Brenice -n 20 {PID}Crenice -n -40 {PID}Drenice -n 40 {PID}
问题:单选题Which of the following commands should be used to monitor the number of bytes read on any given disk?()AtprofBtopasCfilemonDvmstat
问题:单选题Which of the following commands should be used to report statistics on network protocols used by the system?()AlsattrBpstatCnetstatDifconfig
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After issuing the nfsstat -rs command, the null received column starts to grow. This indicates which of the following conditions?()ANot enough NFS daemons runningBToo many NFS daemons runningCnfs_tcp_socketsize is too smallDnfs_tcp_socketsize is too large
问题:单选题The system administrator notices that after running netstat -rn, several small c’s are showing up under the flags columns, and routes that were not defined are also showing up. How can these cloned routes be stopped?()ABy default cloned routes are turned on. To turn cloned routes off issue the command: #no -o tcp_pmtu_discover=0 #no -o udp_pmtu_discover=0 and add to the rc.net or rc.bsdnet file for next rebootBBy default cloned routes are turned on. To turn cloned routes off issue the command: # no -o tcp_pmtu_discover=1 #no -o udp_pmtu_discover=1 and add to the rc.net or rc.bsdnet file for next rebootCBy default cloned routes are turned on. To turn cloned routes off issue the command: #no -o ipforwarding=0 and add to the rc.net or rc.bsdnet file for next rebootDBy default cloned routes are turned on. To turn cloned routes off issue the command: #no -o ipforwarding=1 and add to the rc.net or rc.bsdnet file for next reboot
问题:单选题Which of the following commands should be used to monitor disk utilization during the time a system is experiencing a disk I/O performance problem?()AistatBtopasCvmstatDfilemon
问题:单选题Which of the following commands should be used to obtain information about the installed software?()Asmit systemBsmit installpCsmit licensesDsmit list_software
问题:单选题Which tool is based on the AIX trace facility?()AnoBnetpmonCentstatDnfso
问题:单选题Which of the following tools is used to report the location of logical partitions of a file system on a physical volume?()AlsfsBiostatClslv -pDlsvg -p
问题:单选题An AIX system administrator needs to adjust the maximum amount of memory that can be pinned. Which of the following commands is used to make the change?()Avmtune -MBsvmon -mCvmstat -sDschedtune -m
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 performance tools will work with optimized code and also provides source statement profiling?()AprofBgprofCkprofDtprof
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Which of the following commands can be used to clean up a failed software installation process?()Ainstallp -DBinstallp -dCinstallp -CDinstallp -c
问题:单选题Which of the following commands should be used to set network attributes on a currently running kernel?()AnoBchdevCvmtuneDschedtune
问题:单选题Which of the following options would best help to reduce packet fragmentation for a TCP application transferring large amounts of data between servers across a path of multiple networks?()AAdjust Path MTU attributes, using the no command.BAdjust the status queue size on the adapters, using the chdev command.CAdjust ipforwarding to enabled, using the no command.DAdjust tcp_maxburst to enabled, using the no command.