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GCIH · Question #189

You work as a System Administrator for Happy World Inc. Your company has a server named uC1 that runs Windows Server 2008. The Windows Server virtualization role service is installed on the uC1…

The correct answer is C. Use the Virtualization Management Console to create a snapshot of the virtual machine. Hyper-V snapshots capture the complete state of a virtual machine at a point in time, enabling administrators to revert quickly if an operation like an application installation fails.

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Question

You work as a System Administrator for Happy World Inc. Your company has a server named uC1 that runs Windows Server 2008. The Windows Server virtualization role service is installed on the uC1 server which hosts one virtual machine that also runs Windows Server 2008. You are required to install a new application on the virtual machine. You need to ensure that in case of a failure of the application installation, you are able to quickly restore the virtual machine to its original state. Which of the following actions will you perform to accomplish the task?

Options

  • AUse the Virtualization Management Console to save the state of the virtual machine.
  • BLog on to the virtual host and create a new dynamically expanding virtual hard disk.
  • CUse the Virtualization Management Console to create a snapshot of the virtual machine.
  • DUse the Edit Virtual Hard Disk Wizard to copy the virtual hard disk of the virtual machine.

How the community answered

(42 responses)
  • A
    17% (7)
  • B
    5% (2)
  • C
    71% (30)
  • D
    7% (3)

Why each option

Hyper-V snapshots capture the complete state of a virtual machine at a point in time, enabling administrators to revert quickly if an operation like an application installation fails.

AUse the Virtualization Management Console to save the state of the virtual machine.

Saving the state of a virtual machine suspends it in its current running state for later resumption but does not create a restorable checkpoint that can be used to undo subsequent changes.

BLog on to the virtual host and create a new dynamically expanding virtual hard disk.

Creating a new dynamically expanding virtual hard disk only adds storage to the VM and does nothing to preserve or restore the VM's existing state.

CUse the Virtualization Management Console to create a snapshot of the virtual machine.Correct

A Hyper-V snapshot taken via the Virtualization Management Console records the VM's memory, disk, and configuration state at that exact moment, allowing a one-click revert to the pre-installation state if the application causes problems.

DUse the Edit Virtual Hard Disk Wizard to copy the virtual hard disk of the virtual machine.

Copying the virtual hard disk creates an offline backup of the disk file, but restoring from it requires manually detaching and reattaching the disk, making recovery far slower than using a snapshot.

Concept tested: Hyper-V virtual machine snapshots for rollback

Source: https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/dd560637(v=ws.10)

Topics

#VM snapshot#virtualization#system recovery#rollback

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