CKA Cluster Architecture, Installation, and Configuration 2

Question 1

Which kubeadm command is used to generate a new bootstrap token for joining worker nodes?

Accepted Answer

kubeadm token create

Answer

kubeadm token create generates a new bootstrap token that can be used with kubeadm join to add nodes to the cluster.

Question 2

What is the default port that the kube-apiserver listens on for HTTPS traffic?

Accepted Answer

6443

Answer

The kube-apiserver listens on port 6443 by default for secure HTTPS client connections.

Question 3

Which component is responsible for persisting Kubernetes cluster state?

Accepted Answer

etcd

Answer

etcd is the distributed key-value store that persists all Kubernetes cluster state and configuration data.

Question 4

In a kubeadm-bootstrapped cluster, where are the static Pod manifests for control plane components located?

Accepted Answer

/etc/kubernetes/manifests

Answer

kubeadm places control plane static Pod manifests in /etc/kubernetes/manifests, which the kubelet watches to start those Pods.

Question 5

What flag in kubeadm init allows you to specify the pod network CIDR?

Accepted Answer

--pod-network-cidr

Answer

The --pod-network-cidr flag tells kubeadm the IP address range to allocate for pod networking, which is then passed to the CNI plugin.

(CKA) Certified Kubernetes Administrator Practice Test