KCNA Kubernetes Fundamentals Practice Question
Which of the following is NOT a responsibility of the kubelet on a worker node?
⚠ Common exam trap
Candidates often confuse the kubelet's role with kube-proxy's role, assuming the kubelet handles all networking on the node, including Service traffic routing.
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
✓
Implementing network rules for Services
The kubelet is the primary node agent that runs on each worker node, responsible for ensuring containers are running in a Pod as specified by the PodSpec. It performs liveness and readiness probes, starts and stops containers, and reports node and pod status to the control plane. Implementing network rules for Services, such as iptables or IPVS rules, is the responsibility of the kube-proxy, not the kubelet.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Performing liveness and readiness probes
Why it's wrong here
The kubelet executes probes to determine pod health.
- ✗
Starting and stopping containers based on PodSpecs
Why it's wrong here
The kubelet works with the container runtime to manage containers.
- ✓
Implementing network rules for Services
Why this is correct
Network rules and service load balancing are handled by kube-proxy, not kubelet.
- ✗
Reporting node and pod status to the control plane
Why it's wrong here
The kubelet reports node conditions and pod status.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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