AnautomotivesuppliermaintainsCADworkstationsinwidelyseparatedplantlocations，andtheselocationsareinterconnectedbysingle5Mb\/secondcommunicationlines.Aconsultanthasbeenaskedtoprovideasolutionthatwillallowback-upstobecentralizedinonelocationandimprovedatarecoverytimes.WhichTWOquestionsshouldtheconsultantaskfirsttodeterminethebestsolution？（）
A.InwhatformataretheCADdocuments？
B.Howmuchdataneedstobebackedupfromeachremotesite？
C.Whatarethecurrentacceptablewindowsforbackupandrestore？
D.Aretheplantswithinline-of-sighttoenablewirelesscommunication？
E.Canthecommunicationlinescost-effectivelybeupgradedtoahigherlevelofservice？
参考答案：BC
