单项选择题
A. 1U server
B. 2U rack mount server
C. Tower server
D. 6U blade server
单项选择题 WhichofthefollowingistheMOSTeffectivemethodtorestrictstaffmembersfromaccessinga serviceonacompanyserver？（）
单项选择题 Anadministratorisimplementinganewdataretentionprogramforthecompany.Whichofthe followingistheMOSTimportantconsiderationasthenewprogramiscreated？（）
单项选择题 Whenmakingchangestoaserver，whichofthefollowingistheBESTwaytotroubleshoota problem？（）