1V0-71.21 · Question #53
What are three components of a Kubernetes worker node? (Choose three.)
The correct answer is A. Kubelet C. Container runtime F. Kube-proxy. A Kubernetes worker node runs three essential components: the Kubelet (A), which is an agent that communicates with the control plane and ensures containers are running as specified in Pod specs; the Container runtime (C), which is the software (e.g., containerd, CRI-O) that…
Question
What are three components of a Kubernetes worker node? (Choose three.)
Options
- AKubelet
- BLanguage runtime
- CContainer runtime
- DScheduler
- EEtcd
- FKube-proxy
How the community answered
(22 responses)- A95% (21)
- E5% (1)
Explanation
A Kubernetes worker node runs three essential components: the Kubelet (A), which is an agent that communicates with the control plane and ensures containers are running as specified in Pod specs; the Container runtime (C), which is the software (e.g., containerd, CRI-O) that actually pulls images and runs containers; and Kube-proxy (F), which manages network rules on each node to enable Pod-to-Pod and Service communication.
The distractors belong to the control plane, not worker nodes: the Scheduler (D) assigns Pods to nodes, etcd (E) is the distributed key-value store holding cluster state, and Language runtime (B) is a nonsense option - Kubernetes is container-based and agnostic to language runtimes.
Memory tip: Think of a worker node as a dumb executor - it needs an agent (Kubelet) to receive orders, an engine (container runtime) to do the work, and a network cop (Kube-proxy) to route traffic. Everything "smart" (scheduling, storage, decisions) lives in the control plane.
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