Google PCA Manage and provision cloud infrastructure Practice Question
A team uses Cloud Build to build container images and deploy to Cloud Run. They want to automate deployments whenever a new image is pushed to Container Registry. What is the best approach?
⚠ Common exam trap
The trap here is that candidates may overcomplicate the solution by choosing Cloud Functions or Cloud Scheduler, missing the fact that Cloud Build triggers natively integrate with Container Registry's Pub/Sub events for automated, event-driven deployments.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a Cloud Build trigger that runs on a push to the container image in Container Registry
Cloud Build triggers can be configured to fire on a push to a container image in Container Registry, using the 'cloud-builds' Pub/Sub topic that Container Registry publishes to when an image is pushed. This allows Cloud Build to automatically run a build step (e.g., gcloud run deploy) to deploy the new image to Cloud Run without any polling or external infrastructure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use Cloud Deploy with a delivery pipeline that polls for new images
Why it's wrong here
Cloud Deploy does not have native image push trigger without Cloud Build.
- ✓
Configure a Cloud Build trigger that runs on a push to the container image in Container Registry
Why this is correct
Cloud Build triggers can respond to image push events directly.
- ✗
Create a Cloud Function that subscribes to Pub/Sub and calls Cloud Run deploy
Why it's wrong here
Possible but not the simplest; custom code needed.
- ✗
Set up a Cloud Scheduler job to run a script that deploys the latest image
Why it's wrong here
Not event-driven; runs on schedule.
Go deeper
Related to this question
Learn chapter
Introduction to Google Cloud Platform
Key term
Cloud Run
Cloud Run is a fully managed compute platform from Google Cloud that lets you run containerized applications in a serverless environment, automatically scaling from zero to thousands of requests.
Key term
Image
An image is a complete snapshot of a system's operating system, applications, and settings, used to deploy or restore computing environments quickly.
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