A. %idle < 10% B. %usr + %sys > 80% C. %sys + %wio > 80% D. %wio + %idle > 80%
单项选择题Whichofthefollowingcommandsshouldbeusedtocheckwhetherasystemdumpisvalidandreadable?()
A. kdb B. snap -d C. dbx -vmcore D. od /dev/sysdumpdev
单项选择题Ifasystemadministratorwantstoshowonlyadiskreportfordisk2,attwosecondintervals,whatisthecorrectcommandtorun?()
A. iostat disk1 1 B. iostat -d disk1 2 C. iostat disk2 1 D. iostat -d disk2 2
单项选择题Whichiostat%iowaitminimumthresholdindicatesapossibleI Obottleneck?()
A.20% B.40% C.60% D.80%
单项选择题Whichcommandrecordsthepathtakenbynetworkpacketsbetweenasourceanddestinationsystem?()
A. traceroute B. netstat -p C. ping D. netstat -rn
单项选择题Whichofthefollowingcommandsshouldbeusedtoobservethenumberofsystemcallspersecond?()
A. sar B. iostat C. svmon D. vmstat