Linux Foundation Linux Foundation Certifications CKA Questions & Answers

• Question 1:

  SIMULATION List "nginx-dev" and "nginx-prod" pod and delete those pods

  Correct Answer: Check the answer in explanation.

  kubect1 get pods -o wide

  kubectl delete po "nginx-dev"kubectl delete po "nginx-prod"

• Question 2:

  SIMULATION Task Weight: 4%

  

  Task

  Schedule a Pod as follows:

  Name: kucc1 App Containers: 2 Container Name/Images: nginx consul

  Correct Answer: Check the answer in explanation.

  Solution: Graphical user interface, text, application Description automatically generated

  

  

  

  Text Description automatically generated

• Question 3:

  SIMULATION

  

  Task

  First, create a snapshot of the existing etcd instance running at https://127.0.0.1:2379, saving the snapshot to /srv/data/etcd-snapshot.db.

  

  Next, restore an existing, previous snapshot located at /var/lib/backup/etcd-snapshot-previo us.db

  

  Correct Answer: Check the answer in explanation.

  

• Question 4:

  SIMULATION

  

  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).

  Correct Answer: Check the answer in explanation.

  

• Question 5:

  SIMULATION

  

  Task

  Create a persistent volume with name app-data , of capacity 1Gi and access mode ReadOnlyMany. The type of volume is hostPath and its location is /srv/app-data .

  Correct Answer: Check the answer in explanation.

  #vi pv.yaml apiVersion: v1 kind: PersistentVolume metadata: name: app-config spec: capacity: storage: 1Gi accessModes:

  -ReadOnlyMany hostPath: path: /srv/app-config # kubectl create -f pv.yaml

• Question 6:

  SIMULATION

  

  Task

  Create a new nginx Ingress resource as follows:

  1.

  Name: ping

  2.

  Namespace: ing-internal

  3.

  Exposing service hi on path /hi using service port 5678

  

  Correct Answer: Check the answer in explanation.

  

  

• Question 7:

  SIMULATION

  

  Task

  Check to see how many nodes are ready (not including nodes tainted NoSchedule ) and write the number to /opt/KUSC00402/kusc00402.txt.

  Correct Answer: Check the answer in explanation.

  

• Question 8:

  SIMULATION

  

  Task

  Given an existing Kubernetes cluster running version 1.20.0, upgrade all of the Kubernetes control plane and node components on the master node only to version 1.20.1.

  Be sure to drain the master node before upgrading it and uncordon it after the upgrade.

  

  You are also expected to upgrade kubelet and kubectl on the master node.

  

  Correct Answer: Check the answer in explanation.

  

  

• Question 9:

  SIMULATION

  

  Task

  Create a new NetworkPolicy named allow-port-from-namespace in the existing namespace echo. Ensure that the new NetworkPolicy allows Pods in namespace my-app to connect to port 9000 of Pods in namespace echo.

  Further ensure that the new NetworkPolicy:

  1.

  does not allow access to Pods, which don't listen on port 9000

  2.

  does not allow access from Pods, which are not in namespace my-app

  Correct Answer: Check the answer in explanation.

  

  

• Question 10:

  SIMULATION

  

  Task

  Reconfigure the existing deployment front-end and add a port specification named http exposing port 80/tcp of the existing container nginx. Create a new service named front-end-svc exposing the container port http.

  Configure the new service to also expose the individual Pods via a NodePort on the nodes on which they are scheduled.

  Correct Answer: Check the answer in explanation.