CV0-004 Deployment Practice Question
An organization is implementing a canary deployment strategy for a microservice running on Kubernetes. The deployment should automatically roll back if the error rate exceeds 2% within the first 5 minutes. Which THREE components are essential for implementing this strategy? (Choose three.)
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
✓
Service mesh (e.g., Istio, Linkerd)
To implement canary with automatic rollback, you need a traffic split mechanism (service mesh), monitoring (Prometheus), and progressive delivery tool (Flagger).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Service mesh (e.g., Istio, Linkerd)
Why this is correct
Service mesh can route a percentage of traffic to the canary version.
- ✗
Horizontal Pod Autoscaler
Why it's wrong here
HPA scales pods based on CPU/memory, not for canary rollout automation.
- ✓
Monitoring system (e.g., Prometheus)
Why this is correct
Monitoring collects metrics like error rate to evaluate canary health.
- ✓
Progressive delivery tool (e.g., Flagger, Argo Rollouts)
Why this is correct
Such tools automate traffic shifting and rollback based on metrics.
- ✗
Kubernetes Service with label selectors
Why it's wrong here
A Service alone does not provide traffic splitting by percentage.
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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.