CV0-004 Deployment Practice Question
A company is adopting a canary deployment strategy for a microservice running on Kubernetes. They want to initially route 5% of traffic to the new version and monitor for errors before increasing. Which Kubernetes resource is best suited to implement this traffic splitting?
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 with multiple Deployments and replica scaling
Service meshes like Istio provide traffic routing capabilities, but in native Kubernetes, a Service can be used with multiple Deployments, but traffic splitting is not native. However, using a Service with label selectors that match both versions and manually adjusting replica counts is a common approach, but more advanced canary deployments use tools like Flagger or Istio. Among the options, a Service with a canary Deployment and adjusting replicas is most straightforward.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ConfigMap
Why it's wrong here
ConfigMap is for configuration data, not traffic routing.
- ✗
Ingress resource
Why it's wrong here
Ingress controls external traffic but does not support percentage-based traffic splitting natively.
- ✓
Service with multiple Deployments and replica scaling
Why this is correct
Correct. By running two Deployments (stable and canary) and scaling replicas, the Service distributes traffic proportionally based on pod counts.
- ✗
HorizontalPodAutoscaler
Why it's wrong here
HPA automatically scales pods based on metrics but does not split traffic.
Go deeper
Related to this question
About these practice questions
This CV0-004 question is part of Courseiva's 977-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.