PDE Ingesting and Processing the Data Practice Question
You need to react to changes in a GCS bucket (e.g., new object creation) and trigger a Cloud Run service to process the new file. Which Google Cloud service should you use to route the event?
⚠ Common exam trap
Google often tests the misconception that Pub/Sub is the direct answer for any event routing, but the trap here is that Eventarc is the managed service that simplifies the integration between GCS and Cloud Run, making it the correct choice over raw Pub/Sub.
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
✓
Eventarc
Eventarc is the correct choice because it is purpose-built to route events from Google Cloud sources (like Cloud Storage) to Cloud Run. It directly supports Cloud Storage audit logs and Pub/Sub event triggers, allowing you to react to object creation events without custom middleware. Eventarc handles the event routing, filtering, and delivery to your Cloud Run service automatically.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Pub/Sub directly with a Cloud Run subscription
Why it's wrong here
Cloud Run can be triggered by Pub/Sub, but Eventarc simplifies the setup and provides a standard interface.
- ✗
Cloud Tasks
Why it's wrong here
Cloud Tasks is for task queue management, not event routing.
- ✓
Eventarc
Why this is correct
Eventarc handles events from GCS and other sources, routing them to Cloud Run.
- ✗
Cloud Scheduler
Why it's wrong here
Cloud Scheduler is for scheduled jobs, not event-driven triggers.
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This PDE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PDE exam.