A.hibernate B.shutdown C.sleep D.hypervisor
单项选择题Asmallbusinesscurrentlyhasaserverroomwithalargecoolingsystemthatisappropriateforitssize.Thelocationoftheserverroomisthetoplevelofabuilding.Theserverroomisfilledwithincandescentlightingthatneedstocontinuouslystayonforsecuritypurposes.WhichofthefollowingwouldbetheMOSTcost-effectivewayforthecompanytoreducetheserverroomsenergyfootprint？（）
A.Replace all incandescent lighting with energy saving neon lighting. B.Set an auto-shutoff policy for all the lights in the room to reduce energy consumption after hours. C.Replace all incandescent lighting with energy saving fluorescent lighting. D.Consolidate server systems into a lower number of racks，centralizing airflow and cooling in the room.
