CKA Cluster Architecture, Installation, and Configuration

Question 1

What is the role of the kube-apiserver in a Kubernetes cluster?

Accepted Answer

It provides an interface for the control plane to communicate with the cluster.

Answer

It schedules workloads onto nodes.

Answer

It stores the cluster's state in a key-value database.

Answer

It runs the containers on the nodes.

Question 2

Which command initializes a Kubernetes control plane node using kubeadm?

Accepted Answer

kubeadm init

Answer

kubeadm config

Answer

kubeadm join

Answer

kubectl create

Question 3

Which component of a Kubernetes cluster stores the configuration data in a key-value store?

Accepted Answer

etcd

Answer

kube-proxy

Answer

kube-scheduler

Answer

kubelet

Question 4

What command is used to apply a Pod network in a Kubernetes cluster after initialization?

Accepted Answer

kubectl apply -f <network-yaml-file>

Answer

kubectl create network

Answer

kubeadm network apply

Answer

kubeadm init --network

Question 5

What is the purpose of a kube-scheduler in Kubernetes?

Accepted Answer

To allocate resources for Pods across the cluster.

Answer

To ensure high availability of the control plane.

Answer

To monitor the health of nodes and workloads.

Answer

To load balance traffic between Pods.