Quick Answer
The correct answer is Cloud Pub/Sub, Cloud Tasks, and Cloud Scheduler. Cloud Pub/Sub provides the event-driven data pipeline with ordering guarantees through message ordering keys, ensuring events from multiple sources are processed sequentially. Cloud Tasks handles the retry scheduling by managing task queues with exponential backoff and dead-lettering for failed deliveries, while Cloud Scheduler triggers periodic tasks on a cron schedule. On the Google Professional Cloud Developer exam, this scenario tests your ability to distinguish between orchestration, messaging, and scheduling services—a common trap is choosing Cloud Workflows for retry logic, but Workflows is for orchestrating multi-step processes, not for individual task retry. Remember the memory tip: “Pub/Sub for order, Tasks for retry, Scheduler for time”—each service owns one distinct responsibility in the pipeline.
This PCD practice question tests your understanding of integrating google cloud services. 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 is building a data processing pipeline that needs to ingest events from multiple sources, process them in order, and handle failures with retry. They also need to schedule periodic tasks. Which THREE services should they use? (Choose 3)
Cloud Scheduler
Cloud Scheduler can trigger periodic tasks.
Cloud Tasks
Cloud Tasks provides retries and can handle failures.
Cloud Workflows
Why wrong: Cloud Workflows orchestrates but does not handle retries or scheduling natively.
Cloud Pub/Sub
Cloud Pub/Sub can ingest events with ordering guarantees.
Cloud Logging
Why wrong: Cloud Logging is for logs, not for pipeline processing.
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 Scheduler
Cloud Pub/Sub for ingesting events with ordering, Cloud Tasks for retry handling, and Cloud Scheduler for scheduling periodic tasks. Cloud Workflows is for orchestration, Cloud Logging is for logs.
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 Scheduler
Why this is correct
Cloud Scheduler can trigger periodic tasks.
Related concept
Read the scenario before looking for a memorised answer.
Cloud Tasks
Why this is correct
Cloud Tasks provides retries and can handle failures.
Related concept
Read the scenario before looking for a memorised answer.
Cloud Workflows
Why it's wrong here
Cloud Workflows orchestrates but does not handle retries or scheduling natively.
Cloud Pub/Sub
Why this is correct
Cloud Pub/Sub can ingest events with ordering guarantees.
Related concept
Read the scenario before looking for a memorised answer.
Cloud Logging
Why it's wrong here
Cloud Logging is for logs, not for pipeline processing.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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
Integrating Google Cloud services — This question tests Integrating Google Cloud services — Read the scenario before looking for a memorised answer..
The correct answer is: Cloud Scheduler — Cloud Pub/Sub for ingesting events with ordering, Cloud Tasks for retry handling, and Cloud Scheduler for scheduling periodic tasks. Cloud Workflows is for orchestration, Cloud Logging is for logs.
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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