Linux Foundation Kubernetes and Cloud Native KCNA Questions & Answers

• Question 41:

  What is the functionality of the daemon set?

  A. To run a copy of the pod in all the nodes of the cluster

  B. To initialize the pod before starting the main pod

  C. To run a copy of the pod in a single node of the cluster

  Correct Answer: A

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

  

• Question 42:

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

  A. Imperative

  B. None of the above

  C. Declarative

  Correct Answer: C

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

• Question 43:

  What are cluster-wide objects

  A. Service and Pods

  B. Volumes and Nodes

  C. ConfigMaps and Secrets

  Correct Answer: B

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

  

• Question 44:

  How should folks new to the cloud native ecosystem, go about learning the different aspects of the ecosystem?

  A. by signing up the CNCF slack

  B. by reading the Kubernetes documentation

  C. by looking at the cloud native landscape

  D. by looking at the cloud native trail-map

  Correct Answer: D

  Explanation: https://github.com/cncf/landscape#trail-map

• Question 45:

  What do you call the pattern where you add a second container to the pod to collect logs infor-mation?

  A. Sidecar container logging

  B. Node level logging

  C. Application level logging

  D. Cluster level logging

  Correct Answer: A

  Explanation: https://kubernetes.io/docs/concepts/cluster-administration/logging/

  

• Question 46:

  What is the use of labels in Kubernetes?

  A. All of the options

  B. It is used to assign annotation to an object

  C. It is used to assign key-value pair to an object

  D. It is used to assign a name to an object.

  Correct Answer: C

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

  

• Question 47:

  What is etcd used for in Kubernetes?

  A. Integration with cloud platforms

  B. Network routing for the cluster

  C. Kubernetes API security

  D. Backend object storage for the Kubernetes API

  Correct Answer: D

  Explanation: etcd serves as a distributed object store that backs the Kubernetes API.

• Question 48:

  The Kubernetes rolling update is used for __.

  A. Updating a service

  B. Scaling an application

  C. Updating a deployment

  Correct Answer: C

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

  

• Question 49:

  What is FinOps?

  A. The first step in any cloud transformation

  B. Stage beyond DevOps or DevSecOps, where organization transition to serverless tech- nologies

  C. Using data to make cost savings decisions about cloud usage

  D. Specialized cloud features used by financial industries (example: banks, insurance, etc)

  Correct Answer: C

  Explanation: https://www.servicenow.com/products/it-asset-management/what-is- finops.html

  

• Question 50:

  A ________ is an application running on kubernetes.

  A. node

  B. pod

  C. workload

  D. container

  Correct Answer: C

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