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CV0-004 Practice Question: Which THREE of the following are best practices…
Which THREE of the following are best practices for deploying applications in a cloud environment? (Choose three.)
⚠ Common exam trap
CompTIA often tests the misconception that 'keeping unused resources avoids delays' (D) is a valid cost-saving strategy, when in fact cloud environments are designed for rapid provisioning from images or snapshots, making idle resources an unnecessary expense and security 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
✓
Use immutable infrastructure patterns.
Immutable infrastructure patterns (A) are a best practice because they ensure that once a server or container is deployed, it is never modified in place. Instead, any change requires building a new instance from a golden image or template, which eliminates configuration drift and makes rollbacks trivial. This approach aligns with cloud-native principles where infrastructure is treated as disposable and version-controlled, reducing the risk of snowflake servers and improving reliability.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use immutable infrastructure patterns.
Why this is correct
Immutable infrastructure ensures consistency and security.
- ✓
Design for horizontal scaling rather than vertical.
Why this is correct
Horizontal scaling increases resilience and leverages cloud elasticity.
- ✗
Open all ports in security groups to simplify connectivity.
Why it's wrong here
Security best practice is to restrict ports.
- ✗
Keep unused resources to avoid reprovisioning delays.
Why it's wrong here
Unused resources incur cost and management overhead.
- ✓
Implement blue/green deployment to minimize downtime.
Why this is correct
Blue/green allows zero-downtime updates.
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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.