Cloud Digital Leader Google Cloud Products and Services Practice Question
An organization needs to store archival data that must be retained for 10 years for compliance. Access to this data is expected to be less than once a year, and retrieval can take up to 24 hours. Which Cloud Storage class is the MOST cost-effective for this data?
⚠ Common exam trap
The trap is confusing Coldline and Archive, as both are for infrequent access. Candidates must remember that Archive is the cheapest but has the longest retrieval time (up to 24 hours) and a 365-day minimum storage duration, while Coldline is slightly more expensive but offers faster retrieval.
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 (C) is the most cost-effective for data accessed less than once a year with retrieval times up to 24 hours. It has the lowest storage cost and is designed for long-term archival and compliance.
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 duration and is priced for access roughly quarterly, so yearly archival reads incur retrieval charges and per-object overhead that Archive avoids. Archive storage is the cost-effective class when access is less than once a year and 24-hour retrieval is acceptable.
- ✗
Nearline storage class
Why it's wrong here
Nearline enforces a 30-day minimum storage duration and is priced for access roughly monthly, so a 10-year archive read yearly pays retrieval and early-deletion penalties unnecessarily. Archive storage is the cost-effective class when data is accessed less than once a year and 24-hour retrieval is acceptable.
- ✓
Archive storage class
Why this is correct
Archive storage offers the lowest per-gigabyte cost, designed for data accessed less than once a year with retrieval times of hours. It satisfies the 10-year retention, sub-annual access and 24-hour retrieval constraints more cheaply than Nearline or Coldline.
- ✗
Standard storage class
Why it's wrong here
Standard carries the highest per-gigabyte storage price and no minimum duration, designed for frequently accessed, latency-sensitive data. A yearly-read 10-year archive gains nothing from that hot-access profile. Standard is correct when data is accessed frequently and immediate retrieval is required.
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
Cost Optimisation Strategies on GCP
Key term
Data
Data is raw, unprocessed information, like numbers, words, or measurements, that can be stored, processed, and analyzed by computers.
Key term
General Data Protection Regulation
A European Union law that gives individuals control over their personal data and sets strict rules for how organizations collect, store, and process that data.
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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 GCDL 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 GCDL exam.