单项选择题 A system administrator ran the vmstat command because of performance problems. The output of the vmstat is given： Based on the output， which of the following is insufficient？（）

单项选择题 Asystemadministratordecidestoreviewthesystemerrorlogafterinstallingnewhardware.Whichofthefollowingisthecorrectcommandtouse？（）

单项选择题 Asystemadministrator’sdailymonitoringhasrevealedafailingdiskdrive.Thedrivethatisfailing，hdisk0，isalvmmirroreddrive.Whatisthefirststepthatshouldbetakeninordertophysicallyreplacethisdrive？（）