Google ACE Practice Question: Ensuring Successful Operation of a Cloud Solution

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  gcloud compute disks resize

  Why it's wrong here

  gcloud compute disks resize changes the size of an existing persistent disk in a specified zone or region; it does not alter which instance the disk is attached to. Because the command targets the disk resource itself, it has no effect on attachment state, so it cannot be used to attach that disk to an instance.

• ✓

  gcloud compute instances attach-disk

  Why this is correct

  gcloud compute instances attach-disk is the correct command: it attaches an existing zonal or regional persistent disk to a specified Compute Engine instance, using --disk and optionally --device-name. It works on both running and stopped instances, and it ensures the disk becomes visible as a block device in the instance's guest OS.

• ✗

  gcloud compute instances add-disk

  Why it's wrong here

  gcloud compute instances add-disk is not a valid gcloud compute command; the gcloud CLI does not implement an add-disk subcommand under the instances resource group. The only operational subcommands for existing disks under instances are attach-disk and detach-disk, so this option is simply an incorrect command name.

• ✗

  gcloud compute disks attach

  Why it's wrong here

  gcloud compute disks attach is invalid because the disks command group does not include an attach action; disk attachments are operations performed on instances, not on disks themselves. Valid subcommands under gcloud compute disks include create, delete, describe, list, move, resize, snapshot, and update, while attachment is handled by gcloud compute instances attach-disk.

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