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