easyMultiple Choice
Google PCA Practice Question: Store archival data that is accessed less than…
A company needs to store archival data that is accessed less than once a year and must be retained for 10 years for compliance. The data retrieval time is not critical. Which Cloud Storage class is MOST cost-effective?
⚠ Common exam trap
PCA often tests the confusion between Coldline and Archive storage classes, where candidates may choose Coldline thinking it is the cheapest archival option, but Archive is actually the lowest-cost class for data accessed less than once a year.
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
✓
Archive storage class
Archive storage class is the most cost-effective option for data accessed less than once a year with a 10-year retention requirement and non-critical retrieval time. It has the lowest storage cost of all Cloud Storage classes, designed specifically for long-term archival with a minimum storage duration of 365 days. Coldline and Nearline have higher storage costs and shorter minimum durations (90 and 30 days respectively), making them less economical for this use case.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Coldline storage class
Why it's wrong here
Coldline enforces a 90-day minimum storage duration and suits data accessed roughly annually, so its per-gigabyte price exceeds Archive for data touched less than once a year. It is tempting as a low-cost tier, but Archive's 365-day minimum and retrieval latency match this compliance scenario.
- ✗
Standard storage class
Why it's wrong here
Standard charges the highest per-gigabyte rate and carries no minimum storage duration, so retaining 10 years of rarely accessed data there accrues unnecessary cost. It is tempting for its immediate availability, but Archive's 365-day minimum and retrieval latency suit compliance retention where retrieval time is not critical.
- ✗
Nearline storage class
Why it's wrong here
Nearline enforces a 30-day minimum storage duration and suits data accessed roughly monthly, so its per-gigabyte price exceeds Archive for data touched less than yearly. It is tempting as a low-cost tier, but Archive's 365-day minimum and retrieval latency match this compliance scenario.
- ✓
Archive storage class
Why this is correct
Archive storage offers the lowest per-gigabyte cost and is designed for data accessed less than once a year with a 365-day minimum storage duration, matching the compliance retention and rare-access pattern. Retrieval latency is irrelevant here, so cheaper cold tiers beat Nearline or Coldline.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
Related to this question
Learn chapter
Billing, Budgets, and Cost Management
Key term
Cloud Storage classes
Cloud Storage classes are categories of data storage services offered by cloud providers that differ in performance, availability, cost, and access frequency, allowing users to optimize costs based on how often data is accessed.
Key term
Storage class
A storage class is a category of data storage that defines how data is stored, accessed, retrieved, and billed in a cloud environment.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Google Cloud exam blueprint
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.