單項(xiàng)選擇題

Which of the following commands should be used to show the percentage of time that any given disk was busy？（）

A. ps
B. tprof
C. iostat
D. vmstat

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單項(xiàng)選擇題

The maxmbuff is low by default for systems expecting high network traffic and/or usage. Which of the following utilities should be used to report requests for mbufs that have failed and/or been denied？（）

A. no
B. ping
C. netstat
D. ifconfig

單項(xiàng)選擇題

Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem？（）

A. filemon
B. istat
C. vmstat
D. iostat