单项选择题

What stanza file does a system administrator view to determine what kernel-tuning parameter changes were made when the system was last booted？（）

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

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单项选择题
An administrator attempted to run a sar -u report and received the following error：   sar： 0551-201 Cannot open  var adm sa sa07.   Which of the following should be scheduled in adm’s crontab to obtain sar reports？（）

A.sa1
B.sar
C.vmtune
D.schedtune
单项选择题
A system administrator periodically receives calls from users who complain about poor performance with their application. Use the following sar command output to answer the question： Which of the following system resources need more investigation？（）

A.CPUs
B.Disk
C.Memory
D.NetworkX
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