Cloud Digital Leader Practice Question: Google Cloud products, services, and solutions
A company uses Cloud Storage to store backup files. The files are accessed on average once per year. To minimize storage costs while complying with a 365-day retention policy, which storage class should they use?
⚠ Common exam trap
Google Cloud often tests the misconception that Archive is only for data that is never accessed, but it actually allows retrieval with higher latency and costs, making it suitable for data accessed as infrequently as once per year with a 365-day retention policy.
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
Archive storage class is the correct choice because it offers the lowest storage cost for data that is accessed less than once per year, while still meeting the 365-day retention policy. Archive has a 365-day minimum storage duration, which aligns perfectly with the retention requirement, and its retrieval costs 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.
- ✗
Coldline
Why it's wrong here
Coldline is designed for data accessed less than once a quarter, with a 90-day minimum storage duration. For a 365-day retention policy, Archive is cheaper per gigabyte, and since you won't delete early, Coldline's lower minimum duration offers no advantage. The higher per-GB storage cost of Coldline makes it less cost-effective than Archive for true archival data accessed annually.
- ✓
Archive
Why this is correct
Archive is the lowest-cost storage class in Cloud Storage, purpose-built for long-term archival where data is accessed less than once a year. Its 365-day minimum storage duration aligns exactly with the retention policy; because the data is kept for 365 days, there is no early-deletion penalty. While retrieval costs are higher, the once-per-year access pattern makes these costs negligible, resulting in the lowest total cost of ownership.
- ✗
Nearline
Why it's wrong here
Nearline is optimized for data accessed less than once a month, with a 30-day minimum storage duration and a moderate storage price. For this use case, the data is accessed only annually, so Nearline's capabilities are overkill and more expensive per GB than Archive. The 30-day minimum is easily satisfied, but you would pay a higher storage cost for the entire 365-day retention period, making it not cost-effective.
- ✗
Standard
Why it's wrong here
Standard is for frequently accessed 'hot' data and has no minimum storage duration, but it incurs the highest per-GB storage cost among the storage classes. With only one access per year, you would pay a premium to store the data for 365 days without benefiting from the low retrieval latency or high availability. For archival backups, the ongoing storage expense of Standard is unjustified, making it the least cost-efficient option here.
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
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.
Key term
Retention policy
A retention policy is a set of rules that determines how long an organization keeps its data and what happens to it when the retention period expires.
About these practice questions
This GCDL question is part of Courseiva's 829-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
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.