CV0-004 Deployment Practice Question
An organization wants to deploy a new application with zero downtime by switching traffic between two identical production environments. Which deployment strategy should be used?
⚠ Common exam trap
CV0-004 often tests the confusion between blue/green and canary — candidates pick canary because both reduce risk, but only blue/green provides an instant full cutover and rollback via environment switching.
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
✓
Blue/green deployment
Blue/green deployment maintains two identical production environments (blue and green) and switches traffic from one to the other, typically via a load balancer or DNS cutover. This provides near-zero downtime and instant rollback by simply redirecting traffic back to the previous environment if issues arise.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Rolling deployment
Why it's wrong here
Rolling deployment replaces instances incrementally within one environment, so both versions serve traffic simultaneously and no instant cutover between two identical environments occurs. It is tempting because it avoids full capacity duplication, suiting gradual updates, but the stem requires blue-green switching between parallel environments.
- ✗
Canary deployment
Why it's wrong here
Canary deployment routes a small traffic percentage to the new version for validation, not a full switch between two identical production environments. It is tempting because it limits blast radius during risky releases, suiting incremental validation, but the stem describes blue-green cutover.
- ✗
In-place deployment
Why it's wrong here
In-place deployment updates the existing environment's instances directly, causing downtime during replacement and providing no second environment to switch to. It is tempting because it needs no duplicate infrastructure, suiting cost-sensitive non-critical releases, but zero-downtime cutover requires blue-green with two identical environments.
- ✓
Blue/green deployment
Why this is correct
Blue/green deployment maintains two identical production environments and switches traffic at the load balancer or DNS layer once the new version is verified. Because cutover is atomic and rollback is immediate, users experience no downtime during release.
Go deeper
Related to this question
About these practice questions
One of 834 original CV0-004 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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.