单项选择题
A system administrator thinks that a filesystem may be full and that is what caused the machine to crash. Which command will show the administrator if they are correct?（）
A. du B. df C. fsck D. ncheck
单项选择题 WhichofthefollowingproceduresbestexplainshowtoenabletheNISnameresolutiontotakeprecedenceoverDNSonasystem-widebasis?（）
单项选择题 AsystemmustbeupgradedfromAIX5.1to5.2.Whichofthefollowingschedulingprocessesshouldbeperformed?（）
单项选择题 Whereisthesuloglocated?（）
