- A
Pub/Sub directly with a Cloud Run subscription
Why wrong: Cloud Run can be triggered by Pub/Sub, but Eventarc simplifies the setup and provides a standard interface.
- B
Cloud Tasks
Why wrong: Cloud Tasks is for task queue management, not event routing.
- C
Eventarc
Eventarc handles events from GCS and other sources, routing them to Cloud Run.
- D
Cloud Scheduler
Why wrong: Cloud Scheduler is for scheduled jobs, not event-driven triggers.
Question 615 of 1,000
PDE Ingesting and Processing the Data Practice Question
This PDE practice question tests your understanding of ingesting and processing the data. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
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?
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.
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.
- ✗
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.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Cloud Scheduler
Why it's wrong here
Cloud Scheduler is for scheduled jobs, not event-driven triggers.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco 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.
Detailed technical explanation
How to think about this question
Under the hood, Eventarc uses Cloud Audit Logs to capture storage.object.create events from Cloud Storage, then delivers them via a Pub/Sub topic that is automatically created and managed by Eventarc. This eliminates the need to manually set up Pub/Sub topics and subscriptions, reducing operational complexity. In a real-world scenario, if you need to process thousands of new objects per second, Eventarc can scale automatically and provide at-least-once delivery guarantees, whereas manual Pub/Sub setups might require additional error handling and retry logic.
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.
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Ingesting and Processing the Data — study guide chapter
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FAQ
Questions learners often ask
What does this PDE question test?
Ingesting and Processing the Data — This question tests Ingesting and Processing the Data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 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.
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.
About these practice questions
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Last reviewed: Jul 4, 2026
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.
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