单项选择题
A. ping and arp
B. lsattr and ifconfig
C. netstat and iostat
D. iptrace and tcpdump
单项选择题 InAIX5Landlater，theoperatingsystemsupportsthe/procfilesystem.Whatwouldbethebestdescriptionofthe/procfilesystem？（）
单项选择题 Whichcommandseriesshouldbeusedtodeterminewhetherfilepagingorpagingspacepagingisaproblemwhenrunningaprogramfromanidlesystem？（）
单项选择题 Asystemadministratorwouldliketoresetstatisticstoinitialvaluespriortocollectingdevicestatisticsonent0interface.Whichofthefollowingcommandsshouldberuntoaccomplishthis？（）