单项选择题
A.1
B.3
C.5
D.9
单项选择题 Asystemwasrebootedandistakingalongtimetoreturn.TheadministratorhasloggedintotheHMCandseesreferencecode0c9.Whatdoesthismean（）？
单项选择题 Howcananadministratorviewtheservicebootlist（）？
单项选择题 Theadministratorcreatedanentryintheinittabforrunlevel2.Thesystemwasalreadybootedinnormalmode.Whichwillstartthenewlycreatedentry？（）