单项选择题
A.SAN
B.NAS
C.SCSI
D.iSCSI
单项选择题 Acustomerhasalargeamountofdatastoredonthreedatabaseserversandisconcernedthatatpresentthereisnodisasterrecoveryplaninplace.Theyhaveanexistingtapebackupsolutionthatmeetstheirbackupwindow.Inordertoanalyzepotentialdisasterrecoveryplans，whichofthefollowingquestionsisthemostimportant？（）
多项选择题 AnautomotivesuppliermaintainsCADworkstationsinwidelyseparatedplantlocations，andtheselocationsareinterconnectedbysingle1.5Mb/secondcommunicationlines.Aconsultanthasbeenaskedtoprovideasolutionthatwillallowback-upstobecentralizedinonelocationandimprovedatarecoverytimes.WhichTWOquestionsshouldtheconsultantaskfirsttodeterminethebestsolution？（）
单项选择题 Acustomerisplanningtoimplementadatabaseserverfortheirhighvolumeonlinebusiness.Downtimeatanypointrepresentsasignificantlossofrevenue，soperformanceandhighavailabilityareextremelyimportant.Theyrequesteda4-wayconfigurationwith8GBRAMandfourgigabitEthernetconnections.Whichofthefollowingsolutionsisthemostappropriate？（）