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CV0-004 Practice Question: A storage administrator needs to ensure data…
A storage administrator needs to ensure data durability for a critical database. Which approach provides the highest durability?
⚠ Common exam trap
Many candidates confuse data protection mechanisms (like encryption or RAID) with durability, assuming that redundancy within a single site (RAID 0) or security features (encryption) can prevent data loss from a regional disaster, when only geographic replication addresses that risk.
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
✓
Replicate data to a different geographic region.
Replicating data to a different geographic region provides the highest durability by ensuring that even if an entire data center or region experiences a catastrophic failure (e.g., natural disaster, power outage), a complete copy of the database remains available in another region. This approach leverages asynchronous or synchronous replication to maintain data consistency across geographically separated sites, achieving a Recovery Point Objective (RPO) and Recovery Time Objective (RTO) that single-site solutions cannot match. In cloud environments, this is often implemented using services like AWS Cross-Region Replication or Azure Geo-Redundant Storage, which guarantee 99.9999999999% (12 nines) durability.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Store data on a single SSD volume.
Why it's wrong here
A single volume is a single point of failure and offers no redundancy.
- ✗
Enable encryption at rest.
Why it's wrong here
Encryption protects data confidentiality, not durability.
- ✗
Use RAID 0 across multiple volumes.
Why it's wrong here
RAID 0 stripes data without redundancy; failure of any volume causes data loss.
- ✓
Replicate data to a different geographic region.
Why this is correct
Geo-replication provides the highest durability by storing copies in separate regions, protecting against region-wide disasters.
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 |
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JA
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.