Which of the following technologies can save server space and cooling requirements？（）

多项选择题Whichofthefollowingmethodseffectivelyremovesdatafromaharddrivepriortodisposal？（）

A.Use the remove hardware OS feature
B.Formatting the hard drive
C.Physical destruction
D.Degauss the drive
E.Overwriting data with 1s and 0s by utilizing software

单项选择题ThepowersavingstateinwhichacomputercutspowertoallitsunneededpartsandcopiestheRAMcontenttotheharddriveiscalled（）

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.