- A
FlexRS reduces costs by using slower disk types, which may impact performance.
Why wrong: FlexRS uses standard disks instead of SSD, but the main limitation is pipeline type compatibility.
- B
FlexRS requires using preemptible VMs, which may cause data loss.
Why wrong: FlexRS does use preemptible VMs, but data loss is not a concern for well-designed pipelines; the main limitation is that FlexRS is for batch, not streaming.
- C
FlexRS may increase pipeline latency because it is designed for batch jobs with looser latency requirements.
Why wrong: While true for batch, this is not the primary reason to avoid FlexRS in a streaming context.
- D
FlexRS is only available for batch pipelines, not streaming.
Flexible Resource Scheduling (FlexRS) is a feature for batch Dataflow pipelines to reduce costs; it cannot be enabled for streaming pipelines.
PCDOE Managing Google Cloud costs Practice Question
This PCDOE practice question tests your understanding of managing google cloud costs. 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 company runs a large-scale data processing workload on Dataflow. The pipeline processes streaming data from Pub/Sub and writes results to BigQuery. The current monthly Dataflow cost is $50,000, and the company wants to reduce it. They have already optimized the pipeline code and reduced data shuffling. They notice that the Dataflow workers are running at 100% CPU for most of the time, but the job's autoscaling is set to 'throughput-based' and currently uses 20 workers. The job's latency SLAs are tight. They consider switching to 'flexible resource scheduling' (FlexRS) to reduce costs. What should they evaluate before enabling FlexRS?
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
FlexRS is only available for batch pipelines, not streaming.
Option C is correct because FlexRS is only available for batch pipelines, not streaming pipelines. The current pipeline is streaming, so FlexRS cannot be used. Option A is partially correct but not the primary reason. Option B is true for batch but irrelevant here. Option D is incorrect; FlexRS uses slower disk types? Actually FlexRS uses slower startup but not disk types.
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.
- ✗
FlexRS reduces costs by using slower disk types, which may impact performance.
Why it's wrong here
FlexRS uses standard disks instead of SSD, but the main limitation is pipeline type compatibility.
- ✗
FlexRS requires using preemptible VMs, which may cause data loss.
Why it's wrong here
FlexRS does use preemptible VMs, but data loss is not a concern for well-designed pipelines; the main limitation is that FlexRS is for batch, not streaming.
- ✗
FlexRS may increase pipeline latency because it is designed for batch jobs with looser latency requirements.
Why it's wrong here
While true for batch, this is not the primary reason to avoid FlexRS in a streaming context.
- ✓
FlexRS is only available for batch pipelines, not streaming.
Why this is correct
Flexible Resource Scheduling (FlexRS) is a feature for batch Dataflow pipelines to reduce costs; it cannot be enabled for streaming pipelines.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
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.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which PCDOE 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.
- →
Managing Google Cloud costs — study guide chapter
Learn the concepts, then practise the questions
- →
Managing Google Cloud costs practice questions
Targeted practice on this topic area only
- →
All PCDOE questions
500 questions across all exam domains
- →
Google Professional Cloud DevOps Engineer study guide
Full concept coverage aligned to exam objectives
- →
PCDOE practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related PCDOE practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Bootstrapping a Google Cloud organization for DevOps practice questions
Practise PCDOE questions linked to Bootstrapping a Google Cloud organization for DevOps.
Managing service incidents practice questions
Practise PCDOE questions linked to Managing service incidents.
Managing Google Cloud costs practice questions
Practise PCDOE questions linked to Managing Google Cloud costs.
Building and implementing CI/CD pipelines practice questions
Practise PCDOE questions linked to Building and implementing CI/CD pipelines.
Implementing service monitoring strategies practice questions
Practise PCDOE questions linked to Implementing service monitoring strategies.
Optimizing service performance practice questions
Practise PCDOE questions linked to Optimizing service performance.
PCDOE fundamentals practice questions
Practise PCDOE questions linked to PCDOE fundamentals.
PCDOE scenario practice questions
Practise PCDOE questions linked to PCDOE scenario.
PCDOE troubleshooting practice questions
Practise PCDOE questions linked to PCDOE troubleshooting.
Practice this exam
Start a free PCDOE practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this PCDOE question test?
Managing Google Cloud costs — This question tests Managing Google Cloud costs — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: FlexRS is only available for batch pipelines, not streaming. — Option C is correct because FlexRS is only available for batch pipelines, not streaming pipelines. The current pipeline is streaming, so FlexRS cannot be used. Option A is partially correct but not the primary reason. Option B is true for batch but irrelevant here. Option D is incorrect; FlexRS uses slower disk types? Actually FlexRS uses slower startup but not disk types.
What should I do if I get this PCDOE question wrong?
Identify which PCDOE 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More PCDOE practice questions
- Order the steps to set up a CI/CD pipeline using Cloud Build and Cloud Deploy for a Cloud Run service.
- Order the steps to configure a VPC Network Peering between two projects.
- Order the steps to respond to a Google Cloud security incident involving a compromised service account key.
- Refer to the exhibit. The Cloud Build fails with a permission error. The Cloud Build service account has roles/cloudbuil…
- A company is setting up a new Google Cloud organization. They want to ensure that all projects inherit common IAM polici…
- A DevOps team is bootstrapping CI/CD pipelines that need access to API keys stored in Secret Manager. The pipelines run…
Last reviewed: Jun 24, 2026
This PCDOE 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 PCDOE exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.