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單項選擇題

You have a Windows Server 2008 R2 Hyper-V server. One of the virtual machines (VMs) that is hosted on the server has a directly attached physical disk. You need to back up the VM.
What should you do?()

A.Perform a full server backup on the VM.
B.Perform a critical-volume backup on the VM.
C.Perform a full server backup on the host server.
D.Perform a critical-volume backup on the host server.

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