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？（）

单项选择题Asystemadministratorwouldliketoresetstatisticstoinitialvaluespriortocollectingdevicestatisticsonent0interface.Whichofthefollowingcommandsshouldberuntoaccomplishthis？（）

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

单项选择题WhichofthefollowingcommandsshouldbeusedtoshowDNSinformation？（）

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

单项选择题Whenmonitoringasystemusingvmstatwithaninterval，themetricsunderpageporepresentwhichofthefollowingphrases？（）

A. The number pages over the limit
B. The pages to paging space per second
C. The number of page operations per second
D. The number of processes waiting for page out

单项选择题While monitoring a system that is CPU bound， which of the following output is most likely to occur？（）

A.A
B.B
C.C
D.D

单项选择题Whichofthefollowingcommandsshouldbeusedtoreportstatisticsonnetworkprotocolsusedbythesystem？（）

A. lsattr
B. pstat
C. netstat
D. ifconfig