Linux Foundation Kubernetes and Cloud Native KCNA Questions & Answers

• Question 21:

  How to get the logs of the previously terminated nginx container from the web pod?

  A. kubectl logs -p -c nginx web

  B. kubectl logs nginx

  C. kubectl logs -p -c web nginx

  D. kubectl logs -f -c nginx web

  Correct Answer: A

  Explanation: https://kubernetes.io/docs/reference/generated/kubectl/kubectl- commands#logs

  

• Question 22:

  Which of the following are not the metrics for Site Reliability Engineering?

  A. Service Level Objectives 'SLO'

  B. Service Level Agreements 'SLA'

  C. Service Level Indicators 'SLI'

  D. Service Level Definition 'SLD'

  Correct Answer: D

  SLI defined quantitative measure of some aspect of the level of service that is provided. SLOs are key to

  making data-driven decisions about reliability, they're at the core of SRE practic-es.

  SLAs an explicit or implicit contract with your users that includes consequences of meeting (or missing) the

  SLOs they contain.

• Question 23:

  Which of the following is an advantage a cloud-native microservices application has over monolithic applications?

  A. Cloud-native microservices applications tend to be faster and more responsive than monolithic applications.

  B. Cloud-native microservice applications tend to be easier to troubleshoot.

  C. Cloud-native microservice applications tend to be easier to scale and perform updates on.

  Correct Answer: C

  Explanation: Cloud-native applications tend to be microservice base, they have individual services that can be independently scaled, updated and rolled back. This makes scaling and update operations simpler and less risky.

• Question 24:

  What are default kubernetes namespaces?

  A. default, kube-public, kube-system, kube-node-lease

  B. kube-default, kube-public, kube-system, kube-node-lease

  C. default, kube-public, kube-systems, kube-node-lease

  D. default, kube-public, kube-system, kube-node-leases

  Correct Answer: A

  Explanation: https://kubernetes.io/docs/concepts/overview/working-with- objects/namespaces/

  

• Question 25:

  What is the name for the tool that manages communication between pods, injects a sidecar proxy container into each pod and directs network traffic through the proxy container?

  A. namespace

  B. Deployment

  C. Network policy

  D. Service mesh

  E. Service

  Correct Answer: D

• Question 26:

  A new Pod is created. Then, the Pod is assigned to a Node. Which Kubernetes component was responsible for determining which Node to assign the Pod to?

  A. kubelet

  B. Scheduler

  C. API Server

  D. Controller manager

  Correct Answer: B

  Explanation: https://kubernetes.io/docs/reference/command-line-tools-reference/kube- scheduler/

  

• Question 27:

  Which of the following is used to request storage in Kubernetes?

  A. PersistentVolume 'PV'

  B. PersistentVolumeClaim 'PVC'

  C. Container Storage Interface 'CSI'

  D. StorageClasses

  Correct Answer: B

  Explanation: https://kubernetes.io/docs/concepts/storage/persistent-volumes/

• Question 28:

  Which of the following is not the Kubernetes AutoScaling Strategy?

  A. Horizontal Pod Autoscaler

  B. Cluster Autoscaler

  C. Vertical Pod Autoscaler

  D. Load Balancing AutoScaler

  Correct Answer: D

  Explanation: https://learnk8s.io/kubernetes-autoscaling-strategies

  

• Question 29:

  What is the command to list all the available objects in your Kubernetes cluster?

  A. kubectl get all

  B. kubectl get api-resources

  C. kubectl api-resources

  D. kubectl get pods

  Correct Answer: C

  Explanation: https://kubernetes.io/docs/reference/kubectl/cheatsheet/

  

• Question 30:

  What makes cloud native technology so important?

  A. It makes data centric

  B. It strengthens team

  C. It removes roadblocks to innovation

  D. It helps gather software requirements

  E. It makes operational centric

  Correct Answer: C

  Explanation: https://github.com/cncf/foundation/blob/main/charter.md