This PCA practice question tests your understanding of design and plan a cloud solution architecture. 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 store object data that is accessed infrequently (once a quarter) but must be retained for 10 years for compliance. Which storage class is the most cost-effective?
Archive
Archive is for data accessed less than once a year.
Standard
Why wrong: Standard is for hot data.
Nearline
Why wrong: Nearline is for data accessed monthly.
Coldline
Why wrong: Coldline is for data accessed quarterly.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Archive
Archive storage class is the most cost-effective for data accessed once a quarter and retained for 10 years because it offers the lowest storage cost among Google Cloud Storage classes, designed for long-term preservation with retrieval times in minutes (typically under 15 minutes). The infrequent access pattern (once per quarter) aligns with Archive's trade-off of higher retrieval costs and minimum storage duration of 365 days, which is easily met by the 10-year retention requirement.
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.
Archive
Why this is correct
Archive is for data accessed less than once a year.
Related concept
Read the scenario before looking for a memorised answer.
Standard
Why it's wrong here
Standard is for hot data.
Nearline
Why it's wrong here
Nearline is for data accessed monthly.
Coldline
Why it's wrong here
Coldline is for data accessed quarterly.
Common exam traps
Google Cloud often tests the misconception that Coldline is the cheapest storage class, but Archive is actually the lowest-cost option for data with access intervals greater than 90 days and a retention period exceeding 365 days.
Detailed technical explanation
Under the hood, Archive storage uses erasure coding and is stored on lower-cost media with a retrieval SLA of 15 minutes for standard operations, though early deletion fees apply if data is deleted before 365 days. In a real-world scenario, a financial institution storing quarterly audit logs for 10 years would choose Archive to minimize storage costs, accepting the retrieval time penalty for the rare access, while ensuring compliance with regulatory retention policies.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Design and plan a cloud solution architecture — This question tests Design and plan a cloud solution architecture — Read the scenario before looking for a memorised answer..
The correct answer is: Archive — Archive storage class is the most cost-effective for data accessed once a quarter and retained for 10 years because it offers the lowest storage cost among Google Cloud Storage classes, designed for long-term preservation with retrieval times in minutes (typically under 15 minutes). The infrequent access pattern (once per quarter) aligns with Archive's trade-off of higher retrieval costs and minimum storage duration of 365 days, which is easily met by the 10-year retention requirement.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This PCA 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 PCA exam.
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