- A
Cloud Storage bucket with notifications enabled
The source of events; bucket must be configured to send notifications.
- B
Eventarc trigger
Routes events from Cloud Storage to Cloud Run.
- C
Cloud Dataflow pipeline
Why wrong: Not needed for event triggering; could be used for processing but not for the trigger itself.
- D
Cloud Run service
The target service that processes the file.
- E
Cloud Pub/Sub topic
Why wrong: Eventarc manages Pub/Sub internally; user does not need to create a topic.
Question 528 of 1,000
PDE Ingesting and Processing the Data Practice Question
This PDE practice question tests your understanding of ingesting and processing the data. 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.
A retail company wants to trigger a Cloud Run service whenever a new CSV file is uploaded to a specific Cloud Storage bucket. Which THREE components are needed to set up this event-driven architecture? (Choose 3)
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
✓
Cloud Storage bucket with notifications enabled
Option A is correct because Cloud Storage buckets must have notifications enabled to publish events to Pub/Sub when objects are created. Without enabling notifications, the bucket cannot emit events that trigger downstream services. This is typically done by configuring the bucket to send notifications to a Pub/Sub topic for each new object upload.
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.
- ✓
Cloud Storage bucket with notifications enabled
Why this is correct
The source of events; bucket must be configured to send notifications.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Eventarc trigger
Why this is correct
Routes events from Cloud Storage to Cloud Run.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Cloud Dataflow pipeline
Why it's wrong here
Not needed for event triggering; could be used for processing but not for the trigger itself.
- ✓
Cloud Run service
Why this is correct
The target service that processes the file.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Cloud Pub/Sub topic
Why it's wrong here
Eventarc manages Pub/Sub internally; user does not need to create a topic.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google often tests the misconception that you must manually create a Pub/Sub topic as a separate component, when in fact Eventarc manages it automatically, making the Pub/Sub topic an implicit part of the Eventarc trigger rather than a distinct required component.
Detailed technical explanation
How to think about this question
Eventarc uses Pub/Sub under the hood to deliver events from Cloud Storage to Cloud Run, but when you create an Eventarc trigger for Cloud Storage, Eventarc automatically creates and manages the Pub/Sub topic and subscription. The Cloud Storage bucket must have object finalize notifications enabled, which Eventarc configures via the storage.googleapis.com service account. This ensures that only new CSV file uploads (object finalize events) trigger the Cloud Run service, not other bucket operations.
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: Cloud Storage bucket with notifications enabled — Option A is correct because Cloud Storage buckets must have notifications enabled to publish events to Pub/Sub when objects are created. Without enabling notifications, the bucket cannot emit events that trigger downstream services. This is typically done by configuring the bucket to send notifications to a Pub/Sub topic for each new object upload.
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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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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