Quick Answer
The answer is Cloud Functions with Cloud Scheduler, as this combination provides a fully serverless, event-driven architecture for running a short-lived batch job every hour. Cloud Functions executes the code in under 10 minutes, while Cloud Scheduler acts as the cron trigger, making it ideal for periodic file processing from Cloud Storage without managing any infrastructure. On the Google Professional Cloud Developer exam, this scenario tests your understanding of serverless compute options for scheduled, ephemeral workloads; a common trap is choosing Cloud Run Jobs, which is better for longer-running or containerized tasks, or Compute Engine, which requires manual scaling and is not serverless. Remember that Cloud Functions is purpose-built for event-driven, short-duration tasks under 9 minutes, while Cloud Scheduler provides the reliable, time-based trigger. A helpful memory tip: think “Scheduler fires, Function expires” — if the job fits within the function timeout, it’s the simplest serverless batch job solution.
This PCD practice question tests your understanding of designing highly scalable, available, and reliable cloud-native applications. 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.
A company wants to run a batch job every hour that processes files from Cloud Storage. The job takes about 10 minutes. Which serverless option should they use?
Cloud Run jobs
Why wrong: Cloud Run Jobs can run batch jobs but requires more configuration.
Cloud Functions with Cloud Scheduler
Cloud Functions triggered by Cloud Scheduler is serverless and simple for periodic tasks.
Compute Engine with cron
Why wrong: Compute Engine is not serverless and requires VM management.
App Engine Cron Service with Cloud Tasks
Why wrong: This is more complex than necessary.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Cloud Functions with Cloud Scheduler
Cloud Functions triggered by Cloud Scheduler is ideal for periodic, short-lived batch jobs that process files. Cloud Run Jobs is also suitable but less event-driven. Compute Engine requires manual setup. App Engine Cron Service is possible but more complex.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Cloud Run jobs
Why it's wrong here
Cloud Run Jobs can run batch jobs but requires more configuration.
Cloud Functions with Cloud Scheduler
Why this is correct
Cloud Functions triggered by Cloud Scheduler is serverless and simple for periodic tasks.
Related concept
Read the scenario before looking for a memorised answer.
Compute Engine with cron
Why it's wrong here
Compute Engine is not serverless and requires VM management.
App Engine Cron Service with Cloud Tasks
Why it's wrong here
This is more complex than necessary.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
Identify which PCD exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Designing highly scalable, available, and reliable cloud-native applications — This question tests Designing highly scalable, available, and reliable cloud-native applications — Read the scenario before looking for a memorised answer..
The correct answer is: Cloud Functions with Cloud Scheduler — Cloud Functions triggered by Cloud Scheduler is ideal for periodic, short-lived batch jobs that process files. Cloud Run Jobs is also suitable but less event-driven. Compute Engine requires manual setup. App Engine Cron Service is possible but more complex.
Identify which PCD exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This PCD 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 PCD exam.
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