- A
Canary deployment
Why wrong: Shifts traffic gradually, not all at once.
- B
In-place deployment
Why wrong: Replaces application on same instances, no fallback.
- C
Blue/green deployment
Switches traffic from blue to green after validation, keeping blue as fallback.
- D
Rolling deployment
Why wrong: Replaces instances gradually without full switch.
Question 288 of 997
CV0-004 Deployment Practice Question
This CV0-004 practice question tests your understanding of deployment. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company uses Azure DevOps to deploy a critical application. They need to implement a deployment strategy that ensures zero downtime by directing all traffic to the new environment after validation, while keeping the old environment as a fallback. Which deployment strategy should be configured in the Azure Pipelines release pipeline?
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 is the correct strategy because it maintains two identical environments (blue and green) and switches the router or load balancer to direct all traffic to the new (green) environment only after validation is complete. The old (blue) environment remains untouched and can serve as an immediate fallback if issues arise, ensuring zero downtime during the cutover.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Canary deployment
Why it's wrong here
Shifts traffic gradually, not all at once.
- ✗
In-place deployment
Why it's wrong here
Replaces application on same instances, no fallback.
- ✓
Blue/green deployment
Why this is correct
Switches traffic from blue to green after validation, keeping blue as fallback.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Rolling deployment
Why it's wrong here
Replaces instances gradually without full switch.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between canary and blue/green by emphasizing 'gradual traffic shift' versus 'instant full cutover with fallback,' leading candidates to confuse canary's incremental rollout with the zero-downtime fallback requirement.
Detailed technical explanation
How to think about this question
In Azure Pipelines, blue/green deployment is implemented by configuring deployment slots (e.g., in Azure App Service) or using separate deployment groups with distinct load balancer rules. The release pipeline typically deploys to the staging slot, runs smoke tests, and then performs a swap operation that instantly switches the production slot to the new version, while the old version remains in the staging slot for immediate rollback. This approach relies on the Azure Resource Manager (ARM) slot swap API, which handles traffic routing at the DNS or load balancer level without any application downtime.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CV0-004 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Visual reference
What to study next
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FAQ
Questions learners often ask
What does this CV0-004 question test?
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Blue/green deployment — Blue/green deployment is the correct strategy because it maintains two identical environments (blue and green) and switches the router or load balancer to direct all traffic to the new (green) environment only after validation is complete. The old (blue) environment remains untouched and can serve as an immediate fallback if issues arise, ensuring zero downtime during the cutover.
What should I do if I get this CV0-004 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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.
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