单项选择题
A.3
B.4
C.5
D.10
单项选择题 Whichofthefollowingisasoftwarelayerthatinteractsbetweenthevirtualizedoperatingsystemand thephysicalhardware？（）
单项选择题 Whichofthefollowingwouldanadministratorfollowwhendisposingofequipmentforafinancial institution？（）
单项选择题 WhichofthefollowingistheBESTcasescenarioforpowerfaulttolerancewithinaserver？（）