单项选择题
A.Create a /var/adm/cron/at.allow file with no entries
B.Create a /var/adm/cron/at.deny file with ’*’ as the only entry
C.Create a /var/adm/at/at.deny file with ’ALL’ as the only entry
D.Create a /var/adm/at/at.allow file with ’NONE’ as the only entry
单项选择题 Aclienthasatemporarydeploymentofanewstaticapplicationthatneedstorunforashortperiodoftimeandisnotgoingtochange.Howcanthisdeploymentbeachievedwithaminimumofeffortandtime？（）
单项选择题 WhichcommandwillenableRBAConaserver？（）
单项选择题 Whileattemptingtoexpandafilesystem，anadministratorreceivesanerrormessageindicatingthatthefilesystemisnotrecognized.Runningthe’lsfs’commandfailstodisplayanyoutput，butthe’df’commandisworkinganddisplaysnormalfilesystems.Whatisthelikelycauseoftheproblem？（）