Linux Foundation Linux Foundation Certifications KCNA Questions & Answers

• Question 81:

  Which kubernetes resource type allows defining which pods are isolated when it comes to network-ing?

  A. Network policy

  B. Domain Name System 'DNS'

  C. Role Binding

  D. Service

  Correct Answer: A

  Explanation: https://kubernetes.io/docs/concepts/services-networking/network- policies/#the-two-sorts-ofpod-isolation

  

• Question 82:

  What standard does kubelet use to communicate with the container runtime?

  A. Service Mesh Interface (SMI)

  B. CRI-O

  C. ContainerD

  D. Container Runtime Interface (CRI)

  Correct Answer: D

  Explanation: kubelet can communicate with any runtime that supports the CRI standard.

• Question 83:

  What Kubernetes resource would allow you to run one Pod on some of your Nodes?

  A. DaemonSet

  B. ClusterSet

  C. Deployment

  D. ReplicaSet

  Correct Answer: A

  Explanation: https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/

  

• Question 84:

  What is a benefits of Kubernetes federation?

  A. Avoids scalability limits on pods and nodes

  B. Creates highly available clusters in different regions

  C. Low latency

  Correct Answer: ABC

• Question 85:

  What is the default service type in Kubernetes?

  A. CusterIP

  B. NodePort

  C. serviceType

  D. loadBalancer

  Correct Answer: A

  Explanation: https://kubernetes.io/docs/concepts/services-networking/service/#publishing- services-service-types

  

• Question 86:

  Which is not a service type in Kubernetes?

  A. ClusterIP

  B. NodePort

  C. Ingress

  D. LoadBalancer

  E. ExternalName

  Correct Answer: C

  Explanation: https://kubernetes.io/docs/tutorials/kubernetes-basics/expose/expose-intro/

  

• Question 87:

  What is Open Container Initiative 'OCI'?

  A. A protocol for communicating with the kubernetes api

  B. The governing body of the Cloud Native Computing Foundation 'CNCF'

  C. An open standard for managing service mesh in kubernetes

  D. An organization that creates open standards for containers

  Correct Answer: D

  Explanation: https://opencontainers.org/

  

• Question 88:

  Which of the following command is used to get detailed information about the pod?

  A. kubectl info

  B. kubectl get

  C. kubectl describe

  D. kubectl explain

  Correct Answer: C

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

  

• Question 89:

  Flux is built using which toolkit?

  A. CI/CD

  B. DevSecOps

  C. GitOps

  D. DevOps

  Correct Answer: C

  Explanation: https://fluxcd.io/

  

• Question 90:

  Which style of operations are preferred for K8S and cloud native applications?

  A. JSON

  B. Declarative

  C. Imperative

  Correct Answer: B

  Explanation: https://kubernetes.io/docs/tasks/manage-kubernetes-objects/declarative- config/#trade-offs