KCNA Cloud Native Architecture Practice Question
Which service mesh component is typically deployed as a sidecar proxy alongside application containers?
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
✓
Envoy proxy
Envoy proxy is the most common sidecar proxy in service meshes like Istio and Linkerd. Istiod is the control plane component, Kiali is a visualization tool, and Prometheus is a monitoring system.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Kiali
Why it's wrong here
Kiali is a UI for service mesh observability.
- ✗
Istiod
Why it's wrong here
Istiod is the Istio control plane, not a sidecar.
- ✗
Prometheus
Why it's wrong here
Prometheus is a monitoring and alerting system.
- ✓
Envoy proxy
Why this is correct
Envoy is often deployed as a sidecar to intercept traffic.
Go deeper
Related to this question
Learn chapter
Observability: Monitoring, Logging, and Tracing
Key term
Service Mesh
A service mesh is a dedicated infrastructure layer that manages communication between microservices, handling tasks like service discovery, load balancing, encryption, and observability without requiring changes to application code.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This KCNA practice question is part of Courseiva's free CNCF 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 KCNA exam.