CV0-004 Block Storage Practice Question
A company is evaluating storage options for different use cases. Which TWO storage types are most suitable for hosting a relational database in the cloud? (Select TWO.)
⚠ Common exam trap
A common mistake is thinking that only block storage can host relational databases. While block storage is optimal, file storage (NFS-based) can also be used, but it is often overlooked. Candidates should recognize both as viable options for database hosting.
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
✓
File storage
Block storage (e.g., AWS EBS, Azure Disk) is the primary choice for hosting relational databases due to low latency and direct block-level access. File storage (e.g., AWS EFS, Azure Files) can also host relational databases, especially in shared storage scenarios, though with higher latency and lower performance. Therefore, both block storage and file storage are suitable for hosting relational databases. Cache, archive, and object storage are not designed for active database hosting.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
File storage
Why this is correct
File storage is suitable for hosting relational databases, especially when shared access is needed, but it has higher latency than block storage.
- ✗
Cache storage
Why it's wrong here
Cache storage is used for temporary data and is not suitable for persistent database hosting.
- ✗
Archive storage
Why it's wrong here
Archive storage is designed for long-term backup and is not suitable for active database hosting.
- ✗
Object storage
Why it's wrong here
Object storage is used for unstructured data and is not suitable for hosting relational databases directly.
- ✓
Block storage
Why this is correct
Block storage is the most suitable option for hosting relational databases due to its low latency and block-level access.
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
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CV0-004 practice question is part of Courseiva's free CompTIA 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 CV0-004 exam.