问题:单选题Which of the following tools should be used to report in-depth information about file fragments?()AdefragfsBistatCfilemonDfileplace
查看答案
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 commands should be used to watch system errors as they are logged?()Aerrpt -cBtail -f /var/adm/ras/errlogCsyslogd -dD/usr/lib/errdemon -s 8192
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
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 commands should be used to identify packet sequence problems?()Aping and arpBlsattr and ifconfigCnetstat and iostatDiptrace and tcpdump
问题:单选题Which of the following is true about rmss?()Armss is a part of performance toolbox and stands for Reduced Memory System SimulatorBrmss is a part of perfpmr and stands for Real Memory System SimulatorCrmss is part of the standard bos.perf filesets and stands for Redundant Memory System SimulatorDrmss is part of WLM and stands for Real Memory System Simulator
问题:单选题A TCP/IP application is transferring files from a personal machine to a remote machine. The application writes 32 kilobytes of data at a time to the socket, but has not issued a system call to set the window size. Which of the following procedures should be performed on the personal machine to increase the throughput of the application?()AIncrease the size of thewallBIncrease the size of sb_maxCIncrease the size of tcp_recvspaceDIncrease the size of tcp_sendspace
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 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Comprehensive Service Level Agreements typically do not address:()ARoles & responsibilitiesBHeadcount & budgetsCReporting policiesDPenalites