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CV0-004 Practice Question: Which THREE design principles are fundamental to…
Which THREE design principles are fundamental to building a highly available cloud architecture?
⚠ Common exam trap
CompTIA often tests the misconception that vertical scaling (Option D) is a valid high-availability strategy, when in reality it only addresses capacity and not fault tolerance, and that a single powerful database (Option E) can be made highly available through backups alone, ignoring the need for real-time replication and automatic failover.
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
✓
Eliminate single points of failure
Eliminating single points of failure (A) is fundamental because if any single component (e.g., a load balancer, a storage volume, or a compute instance) fails, the entire system can become unavailable. In cloud architectures, this is achieved by deploying redundant components so that no single failure can cause a complete outage. For example, using multiple load balancers in an active-passive or active-active configuration ensures traffic can still be routed if one fails.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Eliminate single points of failure
Why this is correct
Critical for high availability.
- ✓
Deploy across multiple availability zones
Why this is correct
Protects against zone failure.
- ✓
Implement health checks and auto-recovery
Why this is correct
Automatically replaces failed components.
- ✗
Scale vertically to increase capacity
Why it's wrong here
Vertical scaling has limits and single point of failure.
- ✗
Use a single, powerful database instance
Why it's wrong here
Creates a single point of failure.
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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.