CV0-004 Cloud Architecture and Design Practice Question
Which of the following is a key benefit of using object storage like Amazon S3 over block storage?
⚠ Common exam trap
The CV0-004 exam often tests the misconception that object storage is suitable for low-latency transactional workloads, but the trap here is that candidates confuse scalability with performance, forgetting that block storage (e.g., EBS) is optimized for low latency via direct attachment and NVMe protocols, while object storage prioritizes scale and cost over speed.
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
✓
Unlimited scalability for unstructured data
Amazon S3 is designed for unlimited scalability, allowing you to store and retrieve any amount of unstructured data (e.g., images, videos, backups) without provisioning storage in advance. Unlike block storage, which has fixed size limits per volume, S3 automatically scales to accommodate petabytes of data, making it ideal for modern cloud-native applications.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Unlimited scalability for unstructured data
Why this is correct
Object storage scales to exabytes and is ideal for unstructured data.
- ✗
Direct attachment to a single VM
Why it's wrong here
Block storage attaches directly to VMs; object storage is accessed via API.
- ✗
Supports file-level locking
Why it's wrong here
File storage supports locking; object storage uses eventual consistency.
- ✗
Lower latency for database workloads
Why it's wrong here
Block storage offers lower latency for databases.
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.