单项选择题

A.CPUB.MemoryC.Paging spaceD.Disk capacityXA system adm……

A system administrator ran the iostat command because of system performance problems. The following iostat output is provided：

Based on the output， which of the following is insufficient？（）

A.CPU
B.Memory
C.Paging space
D.Disk capacityX

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单项选择题Asystemadministratorismonitoringasystemthathasrecentlyshownadecreaseinperformance.TheadministratorsuspectsthereisanoverloadoftrafficonasingleEthernetadapter.WhichofthefollowingcommandsisbesttoidentifyapossibleoverloadoftheEthernetadapter？（）

A.ping
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单项选择题Asystemadministratorismonitoringasystemthathasrecentlyshownadecreaseinperformance.Theadministratorsuspectsthatthesystemmaybelowonmemoryandmaybepagingexcessively.Whichofthefollowingcommandsisbesttoidentifyapossiblepagingproblem？（）

A.iostat
B.netstat
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A.ksh -n nextboot
B.tunsave -a -f nextboot
C.tuncheck -r -f nextboot
D.diff $（vmtune） /etc/tunables/nextboot

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A./etc/rc.net
B./etc/tunables/tuning
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D./usr/samples/kernel/nextboot

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