多项选择题
A. NIC
B. HBA
C. Tape backup drive
D. SCSI adapter
E. CPU
单项选择题 Whichofthefollowingcanoccurifthemaximumratedloadisexceededonanuninterruptiblepower supply（UPS）？（）
单项选择题 WhichofthefollowingexpansioncardsshouldbeinstalledintoaservertoprovidefiberchannelSAN connectivity？（）
单项选择题 Whenanadministratoristroubleshootingasystem，whichofthefollowingdescribestheNEXT courseofactionifachangedoesnotsolvetheproblem？（）