PDE Operationalizing machine learning models Practice Question
This PDE practice question tests your understanding of operationalizing machine learning models. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
Refer to the exhibit.
```json
{
"error": "denied: permission denied for us-central1-docker.pkg.dev/my-project/my-repo/my-model:latest"
}
```
Refer to the exhibit. A Cloud Build step fails when pushing a Docker image to Artifact Registry. What is the missing IAM role for the Cloud Build service account?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
roles/artifactregistry.writer
The Cloud Build service account needs the `roles/artifactregistry.writer` role to push Docker images to Artifact Registry. This role grants the necessary permissions to upload artifacts, including images, to the registry. Without it, the build step fails with an authorization error.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
roles/artifactregistry.writer
Why this is correct
This role allows pushing images to Artifact Registry.
Related concept
Read the scenario before looking for a memorised answer.
✗
roles/containerregistry.admin
Why it's wrong here
The error is from Artifact Registry, not Container Registry.
✗
roles/storage.objectCreator
Why it's wrong here
ObjectCreator is for Cloud Storage, not Artifact Registry.
✗
roles/cloudbuild.builds.editor
Why it's wrong here
This role allows creating builds but does not grant push permission to Artifact Registry.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between Artifact Registry and Container Registry roles, and the trap here is that candidates confuse `roles/containerregistry.admin` (for Container Registry) with the correct Artifact Registry role, or assume that Cloud Build's own editor role includes artifact push permissions.
Detailed technical explanation
How to think about this question
Artifact Registry uses IAM roles like `artifactregistry.writer` to control access at the repository level, while the underlying storage is backed by Cloud Storage but abstracted by the registry API. The Cloud Build service account (typically `PROJECT_NUMBER@cloudbuild.gserviceaccount.com`) must have this role on the repository or project to authenticate and push images via `docker push`. A common real-world scenario is forgetting to grant this role after migrating from Container Registry to Artifact Registry, causing builds to fail silently.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Operationalizing machine learning models — This question tests Operationalizing machine learning models — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: roles/artifactregistry.writer — The Cloud Build service account needs the `roles/artifactregistry.writer` role to push Docker images to Artifact Registry. This role grants the necessary permissions to upload artifacts, including images, to the registry. Without it, the build step fails with an authorization error.
What should I do if I get this PDE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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