Linux Foundation CKA Online Practice Questions and Exam Preparation

Linux Foundation CKA Online Questions & Answers

• Question 1:

  SIMULATION

  Configure the kubelet systemd- managed service, on the node labelled with name=wk8s-node-1, to launch a pod containing a single container of Image httpd named webtool automatically. Any spec files required should be placed in the /etc/kubernetes/manifests directory on the node.

  You can ssh to the appropriate node using:

  [student@node-1] $ ssh wk8s-node-1 You can assume elevated privileges on the node with the following command: [student@wk8s-node-1] $ | sudo -i

  Correct Answer. Check the answer in explanation.
  Check the answer in explanation.

  ---

  Solution:

  

  

  

• Question 2:

  SIMULATION List all the pods sorted by name

  Correct Answer. Check the answer in explanation.
  Check the answer in explanation.

  ---

  kubectl get pods --sort-by=.metadata.name

• Question 3:

  SIMULATION

  Create a busybox pod and add "sleep 3600" command

  Correct Answer. Check the answer in explanation.
  Check the answer in explanation.

  ---

  kubectl run busybox --image=busybox --restart=Never -- /bin/sh -c "sleep 3600"

• Question 4:

  SIMULATION

  

  port: 80

  policyTypes:

  Context

  An existing Pod needs to be integrated into the Kubernetes built-in logging architecture (e.g. kubectl logs). Adding a streaming sidecar container is a good and common way to accomplish this requirement.

  Task

  Add a sidecar container named sidecar, using the busybox image, to the existing Pod big-corp-app. The new sidecar container has to run the following command:

  

  Use a Volume, mounted at /var/log, to make the log file big-corp-app.log available to the sidecar container.

  

  Correct Answer. Check the answer in explanation.
  Check the answer in explanation.

  ---

  Solution:

  

  

• Question 5:

  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.
  Check the answer in explanation.

  ---

  Solution:

  

• Question 6:

  SIMULATION

  Monitor the logs of pod foo and:

  1. Extract log lines corresponding to error

  2. unable-to-access-website Write them to /opt/KULM00201/foo

  

  Correct Answer. Check the answer in explanation.
  Check the answer in explanation.

  ---

  Solution:

  

  

• Question 7:

  SIMULATION

  Get list of all the pods showing name and namespace with a jsonpath expression.

  Correct Answer. Check the answer in explanation.
  Check the answer in explanation.

  ---

  kubectl get pods -o=jsonpath="{.items[*]['metadata.name' , 'metadata.namespace']}"

• Question 8:

  SIMULATION List all the pods sorted by created timestamp

  Correct Answer. Check the answer in explanation.
  Check the answer in explanation.

  ---

  kubect1 get pods--sort-by=.metadata.creationTimestamp

• Question 9:

  SIMULATION

  Create a file:

  /opt/KUCC00302/kucc00302.txt that lists all pods that implement service baz in namespace development.

  The format of the file should be one pod name per line.

  Correct Answer. Check the answer in explanation.
  Check the answer in explanation.

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  Solution:

  

  

  

• Question 10:

  SIMULATION

  Perform the following tasks: Add an init container to hungry-bear (which has been defined in spec file /opt/KUCC00108/pod- spec-KUCC00108.yaml) The init container should create an empty file named /workdir/calm.txt If /workdir/calm.txt is not detected, the pod should exit Once the spec file has been updated with the init container definition, the pod should be created

  Correct Answer. Check the answer in explanation.
  Check the answer in explanation.

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  Solution: