单项选择题
The power saving state in which a computer cuts power to all its unneeded parts and copies the RAM content to the hard drive is called（）
A.hibernate
B.shutdown
C.sleep
D.hypervisor
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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.
