C_CPE_2409 · Question #55
What are typical components of a Kubernetes worker node? Note: There are 3 correct answers to this question.
The correct answer is C. Container Runtime D. kube-proxy E. kubelet. A Kubernetes worker node runs three essential components: the Container Runtime (C) executes and manages containers (e.g., containerd, Docker); kube-proxy (D) maintains network rules on the node to enable service communication; and kubelet (E) is the agent that communicates…
Question
What are typical components of a Kubernetes worker node? Note: There are 3 correct answers to this question.
Options
- Aservice-mesh
- Beted
- CContainer Runtime
- Dkube-proxy
- Ekubelet
How the community answered
(20 responses)- A5% (1)
- B5% (1)
- C90% (18)
Explanation
A Kubernetes worker node runs three essential components: the Container Runtime (C) executes and manages containers (e.g., containerd, Docker); kube-proxy (D) maintains network rules on the node to enable service communication; and kubelet (E) is the agent that communicates with the control plane and ensures containers described in PodSpecs are running and healthy.
Why the distractors are wrong:
- A (service-mesh): A service mesh (e.g., Istio) is an optional add-on layer, not a built-in Kubernetes node component.
- B (etcd): etcd is the distributed key-value store that belongs to the control plane, not worker nodes.
Memory tip: Think of the worker node's job as "run, route, report" - the Container Runtime runs containers, kube-proxy routes network traffic, and kubelet reports node/pod status back to the control plane. Anything related to cluster state storage (etcd) or optional networking layers (service mesh) lives elsewhere.
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