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GCP Associate Cloud Engineer Practice Question

You created a user-managed service account that has the Storage Object Viewer role. An existing Compute Engine VM currently runs using the default Compute Engine service account, but the application on the VM now needs to access objects in a private Cloud Storage bucket by assuming the new identity. You want to make this change with the least possible downtime and without replacing the VM. What should you do?

  • Stop the VM, run gcloud compute instances set-service-account with the new service account, then start the VM.

  • Add a metadata entry named service-account-email with the new service account on the running VM; no restart is required.

  • Generate an access token for the new service account and store it as an environment variable for the application on the VM.

  • Grant the Storage Object Viewer role to the new service account; the VM will automatically use it on its next token refresh.

GCP Associate Cloud Engineer
Configuring access and security
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