An administrator is performing an in-place upgrade on a quest VM operating system.
Which of the following can be performed as a quick method to roll back to an earlier state, if necessary?
A . A configuration file backup
B . A full backup of the database
C . A differential backup
D . A VM-level snapshot
Answer: D
Explanation:
A VM-level snapshot is a point-in-time copy of the state and data of a virtual machine (VM). A VM-level snapshot can be used as a quick method to roll back to an earlier state, if necessary, as it can restore the VM to the exact condition it was in when the snapshot was taken. A VM-level snapshot can be useful for performing an in-place upgrade on a guest VM operating system, as it can allow the administrator to revert to the previous operating system version in case of any issues or errors.
Reference: CompTIA Cloud+ Certification Exam Objectives, page 10, section 1.5
Reference: https://cloud.google.com/compute/docs/tutorials/performing-in-place-upgrade-windows-server
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