单项选择题
A.Power down then power up the system
B.Boot into diagnostic mode and run fsck
C.Boot from installation media and run bosboot
D.Boot into maintenance mode and check the bootlist
单项选择题 Duringsystemboot，thesystemhangsatLED0C31.Whatisthefirststepthesystemadministratorshouldtaketocorrecttheproblem？（）
单项选择题 Anewapplicationhasbeenaddedtoasystemwhichneedstoautomaticallybestartedatsystemstartup.Thesystemadministratorhasdecidedtoaccomplishthisbyusingthe/etc/inittabfile.Whichcommandwouldbeusedtoaccomplishthisinasupportedmanner？（）
单项选择题 Asystemadministratorhasfilesystemsthatshouldnotbemountedduringsystemstartup.Howcanthesystemadministratorpreventthe/datafilesystemfrombeingmountedduringsubsequentboots？（）