Kubernetes and Cloud Native Associate (KCNA) — Question 72

Which of the following is a lightweight tool that manages traffic flows between services, enforces access policies, and aggregates telemetry data, all without requiring changes to application code?

Answer options

• A. NetworkPolicy
• B. Linkerd
• C. kube-proxy
• D. Nginx

Correct answer: B

Explanation

Linkerd is specifically designed as a lightweight service mesh that handles traffic management, policy enforcement, and telemetry aggregation seamlessly, requiring no changes to application code. NetworkPolicy is focused on defining network access policies rather than managing traffic flows. kube-proxy is responsible for routing traffic to services within a Kubernetes cluster but does not provide the same level of service management. Nginx is a web server and reverse proxy but lacks the specific service mesh capabilities of Linkerd.