单项选择题

Anadministratorhasencounteredanerrorwhilepatchingavirtualizedguestmachine.Whichof thefollowingtechnologieswouldallowtheadministratortorestoretoapre－patchedstatethe FASTEST？（）

A.Cloning
B.BareMetalRestore
C.OSRestore
D.Snapshot
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单项选择题
Aserveradministratorimplementsasolutionthatshouldfixanissue.Whichofthefollowing shouldtheadministratordoNEXTinthetroubleshootingprocess？（）
A.Notifyusersimpactedbytheproblem
B.Verifyfullsystemfunctionality
C.Documenttheactionsandoutcomes
D.Identifythescopeoftheproblem
单项选择题
Anadministratoristroubleshootingapowersupplythatisbelievedtohavefailed.Whichofthe followingtoolswillBESThelptestthepowersupply？（）
A.ESDEquipment
B.Multimeter
C.POSTCard
D.TonerProbe
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