A system must be evaluated and tuned.  In order to use a set of performance evaluation programs （e.g.， filemon， svmon， and tprof） which of the following packages should exist on the system in question？（）

单项选择题Whichofthefollowingcommandscanbeusedtoobtaininformationabouttheinstalledsoftware？（）

A. lslpp -L
B. uname -s
C. oslevel -q
D. installp -p

单项选择题Whichofthefollowingcommandscanbeusedtowatchsystemerrorsastheyarelogged？（）

A. smit errpt
B. smit errdemon
C. smit alog
D. smit syslogd

单项选择题Whichofthefollowingcommandscanbeusedtoobtaininformationaboutfilesetsonthesystemthatarelaterthanthecurrentmaintenancelevel？（）

A. lslpp -I
B. uname -r
C. oslevel -g
D. rpcinfo -p

单项选择题ASystemAdministratorneedstodetermineifthesystemhasthelatestversionofperfmgrandifthefilesetscopiedtothe tmpdirectoryarethelatest.Whichofthefollowingcommandsequenceswouldberequiredtoaccomplishthis？（）

A. lslpp -l perfmgr.* ； cd /tmp ； installp -ld
B. smitty list_software ； oslevel -g
C. smitty list_software ； lslpp -f perfmgr*
D. cd /usr/sys/install.images ； ls -la ； cd /tmp ； ls -la

单项选择题WhentryingtoruntopasonanAIX4.3.xsystem，thesystemadministratorgetstheerrormessage ksh：topas：notfound. Whichofthefollowingoptionsisthemostlikelyreasonthisoccurred？（）

A. The fileset bos.perf.tools is not loaded on this system.
B. The fileset perfagent.tools is not loaded on this system.
C. The command topas is only available in AIX version 5.x.
D. The path variable does not include /usr/samples/kernel/. Either add it to the .profile or cd to that location and run the command again.