Medium1 markMultiple Choice
Domain 4.1: Managing Compute Engine resourcesDomain 4.1Compute EngineSnapshots

GCP ACE · Question 32 · Domain 4.1: Managing Compute Engine resources

You need to perform a major OS upgrade on a critical Compute Engine instance. You want to ensure you can quickly roll back to the exact current state if the upgrade fails.

What is the MOST efficient way to achieve this?

Answer options:

A.

Create a custom image from the boot disk.

B.

Create a snapshot of the boot disk before starting the upgrade.

C.

Export the disk to Cloud Storage as a tar.gz file.

D.

Clone the VM to a different zone.

How to approach this question

Identify the standard backup mechanism for Compute Engine disks.

Full Answer

B.Create a snapshot of the boot disk before starting the upgrade.✓ Correct
Create a snapshot of the boot disk before starting the upgrade.
Persistent Disk snapshots are the standard method for backing up data on Compute Engine. They are incremental, fast to create, and allow you to quickly restore a disk to a previous state if an operation (like an OS upgrade) goes wrong.

Common mistakes

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

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