Linux Foundation Certified Kubernetes Administrator Exam

Certification Provider: Linux Foundation

Exam Name: Certified Kubernetes Administrator

Duration: 120 Minutes

Number of questions in our database: 65

Exam Version: May. 04, 2022

Exam Official Topics:

Topic 1: Understand host networking configuration on the cluster nodes/ Evaluate cluster and node logging
Topic 2: Choose an appropriate container network interface plugin/ Know how to configure applications with persistent storage
Topic 3: Understand ClusterIP, NodePort, LoadBalancer service types and endpoints/ Understand persistent volume claims primitive
Topic 4: Awareness of manifest management and common templating tools/ Understand storage classes, persistent volumes
Topic 5: Understand how resource limits can affect Pod scheduling/ Use ConfigMaps and Secrets to configure applications
Topic 6: Know how to use Ingress controllers and Ingress resources/ Understand how to monitor applications
Topic 7: Perform a version upgrade on a Kubernetes cluster using Kubeadm/ Understand volume mode, access modes and reclaim policies for volumes
Topic 8: Provision underlying infrastructure to deploy a Kubernetes cluster/ Manage container stdout & stderr logs
Topic 9: Know how to configure and use CoreDNS/ Troubleshoot cluster component failure/ Implement etcd backup and restore
Topic 10: Understand connectivity between Pods/ Troubleshoot application failure/ Use Kubeadm to install a basic cluster
Topic 11: Understand deployments and how to perform rolling update and rollbacks/ Manage a highly-available Kubernetes cluster
Topic 12: Manage role based access control (RBAC)/ Know how to scale applications/ Understand the primitives used to create robust

Free Linux Foundation Certified Kubernetes Administrator Exam Actual Questions

The questions for Certified Kubernetes Administrator were last updated On May. 04, 2022

Question #1

Score: 5%

Task

From the pod label name=cpu-utilizer, find pods running high CPU workloads and write the name of the pod consuming most CPU to the file /opt/KUTR00401/KUTR00401.txt (which already exists).

AExplanation:
Solution:
kubectl top -l name=cpu-user -A
echo 'pod name' >> /opt/KUT00401/KUT00401.txt

Reveal Solution

Correct Answer: A

Question #2

Score: 13%

Task

A Kubernetes worker node, named wk8s-node-0 is in state NotReady. Investigate why this is the case, and perform any appropriate steps to bring the node to a Ready state, ensuring that any changes are made permanent.

AExplanation:
Solution:
sudo -i
systemctl status kubelet
systemctl start kubelet
systemctl enable kubelet

Reveal Solution

Correct Answer: A

Question #3

List ''nginx-dev'' and ''nginx-prod'' pod and delete those pods

Akubect1 get pods -o wide
kubectl delete po ''nginx-dev''
kubectl delete po ''nginx-prod''

Bkubect1 get pods -o wide
kubectl delete po ''nginx- prod''
kubectl delete po ''nginx-prod''

Reveal Solution

Correct Answer: A

Question #4

Create 2 nginx image pods in which one of them is labelled with env=prod and another one labelled with env=dev and verify the same.

Akubectl run --generator=run-pod/v1 --image=nginx -- labels=env=prod nginx-prod --dry-run -o yaml > nginx-prodpod.yaml Now, edit nginx-prod-pod.yaml file and remove entries like ''creationTimestamp: null'' ''dnsPolicy: ClusterFirst''
vim nginx-prod-pod.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
env: prod
name: nginx-prod
spec:
containers:
- image: nginx
name: nginx-prod
restartPolicy: Always
# kubectl create -f nginx-prod-pod.yaml
- image: nginx
name: nginx-dev
restartPolicy: Always
# kubectl create -f nginx-prod-dev.yaml
Verify :
kubectl get po --show-labels
kubectl get po -l env=prod
kubectl get po -l env=dev

Bkubectl run --generator=run-pod/v1 --image=nginx -- labels=env=prod nginx-prod --dry-run -o yaml > nginx-prodpod.yaml Now, edit nginx-prod-pod.yaml file and remove entries like ''creationTimestamp: null'' ''dnsPolicy: ClusterFirst''
vim nginx-prod-pod.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
env: prod
name: nginx-prod
spec:
containers:
- image: nginx
name: nginx-prod
restartPolicy: Always
# kubectl create -f nginx-prod-pod.yaml
kubectl run --generator=run-pod/v1 --image=nginx --
labels=env=dev nginx-dev --dry-run -o yaml > nginx-dev-pod.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
env: dev
name: nginx-dev
spec:
containers:
- image: nginx
name: nginx-dev
restartPolicy: Always
# kubectl create -f nginx-prod-dev.yaml
Verify :
kubectl get po --show-labels
kubectl get po -l env=prod
kubectl get po -l env=dev

Reveal Solution

Correct Answer: A

Question #5

Get IP address of the pod -- ''nginx-dev''

AKubect1 get po -o wide
Using JsonPath
kubect1 get pods -o=jsonpath='{range
.items[*]}{.metadata.name}{'\t'}{.status.podIP}{'\n'}{end}'

BKubect1 get po -o wide
Using JsonPath
kubect1 get pods -o
.items[*]}{.metadata.name}{'\t'}{.status.podIP}{'\n'}{end}'

Reveal Solution

Correct Answer: A

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