單項(xiàng)選擇題

Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system？（）

A. foo ； lsps -s
B. tprof -kx ； foo
C. iostat ； foo ； iostat
D. vmstat -s ； foo ； vmstat s

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單項(xiàng)選擇題

A system administrator would like to reset statistics to initial values prior to collecting device statistics on ent0 interface. Which of the following commands should be run to accomplish this？（）

A. netstat -v ent0
B. chdev -l ent0 -a reset=true
C. entstat -r ent0
D. Ethernet interface values cannot be reset

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Which of the following commands should be used to show DNS information？（）

A. trace
B. netstat
C. ifconfig
D. nslookup