Which item is a Kubernetes node component?

kube-scheduler is a Kubernetes control plane component responsible for scheduling pods on nodes, not a node component.

kubectl is a command-line tool for interacting with the Kubernetes API server, not a component running within the cluster.

The kube-proxy runs on each node in the cluster and maintains network rules on nodes, allowing network communication to your Pods from inside or outside of the cluster. It acts as a network proxy for Kubernetes services, handling request forwarding and load balancing.

etcd is a distributed key-value store that serves as Kubernetes' backing store for all cluster data, running as a control plane component, not directly on individual worker nodes.