- A
Standard storage class
Why wrong: Standard has the highest storage cost and no retrieval fees — appropriate for frequently accessed data (daily or more). Monthly access doesn't justify the premium storage cost.
- B
Nearline storage class
Nearline is optimized for data accessed roughly once per month: lower storage cost than Standard with a retrieval fee. It balances storage cost savings against monthly access frequency appropriately.
- C
Coldline storage class
Why wrong: Coldline is designed for quarterly access. Using it for monthly queries means paying higher retrieval fees than Nearline, making it more expensive overall for monthly access patterns.
- D
Archive storage class
Why wrong: Archive is for long-term preservation (annual access or less). Monthly queries would incur very high retrieval fees, making it the most expensive option for this access pattern.
Quick Answer
The answer is the Nearline storage class. This is correct because Nearline offers the lowest storage cost for data accessed less than once per month, with a 30-day minimum storage duration that perfectly aligns with your monthly query pattern, while still providing sub-second access for BigQuery ad-hoc analysis. On the Google Associate Cloud Engineer exam, this scenario tests your understanding of how storage class selection impacts cost and query availability, with a common trap being to choose Coldline or Archive for lower storage costs, forgetting that their higher retrieval fees and slower access times make them unsuitable for interactive BigQuery queries. Remember the memory tip: “Nearline for near-monthly queries” — if you query data about once a month, Nearline is the cost-effective sweet spot between Standard’s higher price and Coldline’s retrieval penalties.
Google ACE Planning and configuring a cloud solution Practice Question
This ACE practice question tests your understanding of planning and configuring a cloud solution. 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 choose between Cloud Storage storage classes for a dataset used in BigQuery for ad-hoc analysis. The data is queried approximately once per month. Which storage class minimizes storage cost while maintaining query availability?
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
Nearline storage class
Nearline storage class is the best choice because it offers the lowest storage cost for data accessed less than once a month (30-day minimum storage duration) while still providing sub-second access for BigQuery queries. Standard storage has no minimum duration but is more expensive for infrequent access, while Coldline and Archive have lower storage costs but impose higher retrieval costs and longer access times that are unsuitable for ad-hoc BigQuery queries.
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.
- ✗
Standard storage class
Why it's wrong here
Standard has the highest storage cost and no retrieval fees — appropriate for frequently accessed data (daily or more). Monthly access doesn't justify the premium storage cost.
- ✓
Nearline storage class
Why this is correct
Nearline is optimized for data accessed roughly once per month: lower storage cost than Standard with a retrieval fee. It balances storage cost savings against monthly access frequency appropriately.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Coldline storage class
Why it's wrong here
Coldline is designed for quarterly access. Using it for monthly queries means paying higher retrieval fees than Nearline, making it more expensive overall for monthly access patterns.
- ✗
Archive storage class
Why it's wrong here
Archive is for long-term preservation (annual access or less). Monthly queries would incur very high retrieval fees, making it the most expensive option for this access pattern.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that 'cheapest storage class' always minimizes total cost, but the trap here is that Archive and Coldline have hidden retrieval costs and minimum storage durations that make them more expensive for data accessed even occasionally, and they cannot be queried directly by BigQuery without prior restoration.
Detailed technical explanation
How to think about this question
Google Cloud Storage classes use different minimum storage durations and retrieval pricing to optimize for access patterns: Nearline (30-day min), Coldline (90-day min), and Archive (365-day min). BigQuery can query data stored in Cloud Storage via external tables or load jobs, but only Standard and Nearline classes support direct querying without prior restoration; Coldline and Archive require data to be first moved or restored to a higher-tier class, adding latency and cost. In practice, for monthly ad-hoc analysis, Nearline balances storage cost (≈$0.01/GB/month) against retrieval fees ($0.01/GB) and zero restoration time, making it the most economical choice.
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 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.
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FAQ
Questions learners often ask
What does this ACE question test?
Planning and configuring a cloud solution — This question tests Planning and configuring a cloud solution — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Nearline storage class — Nearline storage class is the best choice because it offers the lowest storage cost for data accessed less than once a month (30-day minimum storage duration) while still providing sub-second access for BigQuery queries. Standard storage has no minimum duration but is more expensive for infrequent access, while Coldline and Archive have lower storage costs but impose higher retrieval costs and longer access times that are unsuitable for ad-hoc BigQuery queries.
What should I do if I get this ACE 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: Jun 30, 2026
This ACE 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 ACE exam.
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