Cloud Digital Leader Practice Question: Google Cloud products, services, and solutions
A company wants to store archival data that must be retained for 10 years. The data is accessed less than once a year. Which Cloud Storage class is the most cost-effective?
⚠ Common exam trap
Google Cloud often tests the misconception that 'Coldline' is the cheapest storage class, but Archive Storage is actually the lowest-cost option for long-term retention with very infrequent access, and candidates may overlook the minimum storage duration and retrieval cost trade-offs.
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
Archive Storage is the most cost-effective option for data that must be retained for 10 years and is accessed less than once a year. This class offers the lowest storage cost among Google Cloud Storage classes, specifically designed for long-term preservation of data that is rarely accessed, with a minimum storage duration of 365 days and higher retrieval costs that are acceptable given the infrequent access pattern.
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
Why it's wrong here
Standard Storage is optimized for hot data that is read or written frequently, such as active databases or real-time analytics. It has no minimum storage duration but carries the highest per-GiB storage price, making it prohibitively expensive for archival data that is rarely accessed and must be retained for years.
- ✗
Nearline Storage
Why it's wrong here
Nearline Storage is designed for data accessed less than once a month, with a lower storage price than Standard but still significantly more expensive than Archive. It also imposes a 30-day minimum storage duration, and retrieval costs are higher, so it is not cost-effective for long-term archival retention where access is expected to be less than once per year.
- ✗
Coldline Storage
Why it's wrong here
Coldline Storage targets data accessed less than once per quarter, offering a lower price than Nearline but still charting above Archive Storage. It has a 90-day minimum storage duration, and early deletion penalties apply; for archival data that must be retained for years without predictable access, it remains more costly than Archive Storage while providing no advantage in durability or compliance.
- ✓
Archive Storage
Why this is correct
Archive Storage is the correct choice for archival data because it is the cheapest storage class in Google Cloud for data accessed less than once per year. It offers the same global durability and redundancy as other classes, while its very low storage cost makes it ideal for long-term retention, even though it incurs the highest retrieval latency and a 365-day minimum storage duration.
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
Cloud Digital Transformation
Key term
Data
Data is raw, unprocessed information, like numbers, words, or measurements, that can be stored, processed, and analyzed by computers.
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.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.