A system administrator identified a problem with an AIX command and implemented a work-around. A call was made to IBM Support to report the problem. What severity level should the administrator choose？（）

单项选择题Whichofthefollowingcommandswillclearallsoftwareentriesintheerrorlog？（）

A.errpt -d S
B.errclean 0
C.errclear -d S 0
D.errclean -d S 0

单项选择题AsystemadministratorhasjustfinishedupgradingasystemtoAIX5.2.Iftherearefutureproblems，thesystemadministratorwouldliketoaddanentrytotheAIXerrorlogtorecordthisevent.Whichofthefollowingcommandscanbeissuedforthispurpose？（）

A./usr/bin/errmsg "System upgraded to AIX 5.2"
B./usr/bin/errlog "System upgraded to AIX 5.2"
C./usr/bin/errupdate "System upgraded to AIX 5.2"
D./usr/bin/errlogger "System upgraded to AIX 5.2"

单项选择题PerformancemonitoringofapoorlyperformingsystemindicatesahighlevelofCPUusage.WhichtoolcanbeusedtohelpidentifywhichprocessesareusingexcessiveCPUresources？（）

A.sar
B.topas
C.iostat
D.vmstat

单项选择题Asystemadministratorreceivedthefollowingmessagewhiletryingtosshtoaserver：connectiontimedout.Theadministratorpingedtheserverandhadnoresponse.Theadministratorthenpingedthegateway，andwassuccessful.Whichtoolcouldtheadministratorusenexttoisolatetheproblem？（）

A.route
B.traceroute
C.netstat -nr
D.broadcast ping

单项选择题AusercallstoreporttheyaregettingI Oerrorsonafilesystem.Whichofthefollowingtoolsshouldbeusedtoisolatethisproblem？（）

A.df
B.diagrpt
C.errmsg
D.errpt