Which of the following is considered a component of a Kubernetes node?

Which of the following is considered a component of a Kubernetes node?

• A. Kubelet
• B. Kube-DNS
• C. Kube-Proxy
• D. Etcd

Answer: (C)

The main idea here is how the node handles networking for services. Kube-proxy runs on every node and is responsible for implementing Kubernetes Services at the node level. It watches the API server for Service and Endpoints objects and configures the node’s networking (iptables or IPVS) so that traffic to a Service IP gets correctly directed to one of the pods backing that Service. This per-node networking wiring is essential for service discovery and load balancing to work across the cluster. In contrast, kubelet is the node agent that manages pods and containers on the node by talking to the API server. Etcd stores the cluster's state in the control plane, not on individual nodes. Kube-dns (CoreDNS) provides DNS for the cluster and typically runs as pods in the cluster rather than as a node-level component.

The main idea here is how the node handles networking for services. Kube-proxy runs on every node and is responsible for implementing Kubernetes Services at the node level. It watches the API server for Service and Endpoints objects and configures the node’s networking (iptables or IPVS) so that traffic to a Service IP gets correctly directed to one of the pods backing that Service. This per-node networking wiring is essential for service discovery and load balancing to work across the cluster.

In contrast, kubelet is the node agent that manages pods and containers on the node by talking to the API server. Etcd stores the cluster's state in the control plane, not on individual nodes. Kube-dns (CoreDNS) provides DNS for the cluster and typically runs as pods in the cluster rather than as a node-level component.