You are about to perform a major OS upgrade on a critical Compute Engine instance. You want to ensure you can quickly revert the disk to its exact current state if the upgrade fails.

What should you do FIRST?

Answer options:

Create a custom image from the instance.

Create a snapshot of the instance's boot disk.

Export the disk to Cloud Storage.

Enable autohealing on the instance.

How to approach this question

Identify the GCP feature designed for point-in-time backups of persistent disks.

Full Answer

B.Create a snapshot of the instance's boot disk.✓ Correct

A snapshot is a point-in-time backup of a Persistent Disk. Taking a snapshot before a major change (like an OS upgrade) is a best practice. If the upgrade fails, you can create a new disk from the snapshot and attach it to the VM, reverting the system to its previous state.

Common mistakes

Confusing Images (used as templates for new VMs) with Snapshots (used for backups of existing disks).

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Practice the full GCP Associate Cloud Engineer Practice Exam 3

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