Get KCNA Braindumps & KCNA Real Exam Questions [Q17-Q38]

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Get KCNA Braindumps & KCNA Real Exam Questions

Linux Foundation KCNA Actual Questions and Braindumps

Linux Foundation KCNA Exam Syllabus Topics:

Topic	Details
Topic 1	Kubernetes Architecture, Kubernetes Fundamentals, Kubernetes Resources, Kubernetes API
Topic 2	Container Orchestration Fundamentals Container Orchestration, Networking, Service Mesh, Security
Topic 3	Community and Governance, Roles and Personas Cloud Native Architecture1
Topic 4	Application Delivery Fundamentals GitOps, CI CD Cloud Native Application Delivery
Topic 5	Telemetry & Observability Cloud Native Observability

Q17. How does service logical group set of pods?

Using hostname

Using label and selectors

Using IP address

https://kubernetes.io/docs/concepts/services-networking/service/

Q18. Which of the following computing model doesn’t require you to provision infrastructure?

None of the above

Bare Metal

Compute Engine

Virtual Machines

Serverless

Q19. What tool allows you to create self-managing, self-scaling, self-healing storage?

Persistent Volume

Persistent Volume Claim

Storage Class

Rook

Volume

https://rook.io/

Q20. Which kubernetes resource type allows defining which pods are isolated when it comes to network-ing?

Network policy

Domain Name System ‘DNS’

Role Binding

Service

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

Q21. What does the ‘kops’ acronym means?

Kubernetes Open Platform Specification

Kubernetes Operations

Kubernetes Operators

Kubernetes Operation Policy Specification

https://github.com/kubernetes/kops

Q22. What is not semantic versioning?

1.0.0

2022-05-04

1.0.0-alpha

1.0.0-beta.2

https://semver.org/
RegEx SemVer at https://regex101.com/r/vkijKf/1/

Q23. The Kubernetes rolling update is used for __.

Updating a service

Scaling an application

Updating a deployment

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

Q24. Open Container Initiative set container standards for

Code, Build, Distribute, Deploy containers

Run, build, and image

Code, Build, Distribute containers

Run, Build, Distribute containers

Q25. Which prometheus metric type represents a single number value that can increase and decrease over time?

Gauge

Histogram

Summary

Counter

https://prometheus.io/docs/concepts/metric_types/#gauge

Q26. What is the functionality of the daemon set?

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

To initialize the pod before starting the main pod

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

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

Q27. Which authentication method allows JWTs to authenticate?

OpenId connect

Client ‘TLS’ certificates

OPA gatekeeper

Anonymous

Q28. Which tool is built on the GitOps toolkit?

Jenkins-X

GitHub Workflow & Actions

Flux

Jenkins

ArgoCD

Travis CI

https://fluxcd.io/#gitops-toolkit

Note: Argo CD is a GitOps tool and not using GitOps toolkit

Q29. How would you return all the pod data in the json format using kubectl command?

kubectl get pods -o json

kubectl get pods –all-namspaces

kubectl get pods -o wide

kubectl get pods -o jsonpath

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

Q30. Which part of a Kubernetes cluster is responsible for running container workloads?

Worker Node

kube-proxy

Control plane

etcd

Worker Nodes are responsible for executing containerized workloads.

Q31. Continuous delivery is ______.

Manually deploying the code

Coding, Building and Testing the code

Automatically deploying code to [container or server] environment

Q32. What standard does kubelet use to communicate with the container runtime?

Service Mesh Interface (SMI)

CRI-O

ContainerD

Container Runtime Interface (CRI)

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

Q33. What is FinOps?

The first step in any cloud transformation

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

Using data to make cost savings decisions about cloud usage

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

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

Q34. Have a pod ‘hello’ and a container in that pod ‘green’. Which of the following commands would get the logs for that container?

alias k=’kubectl’
k logs -p hello -c green

alias k=’kubectl’
k logs hello -c green

alias k=’kubectl’
k get logs -p hello -c green

alias k=’kubectl’
k logs -p hello green

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

Q35. What is horizontal scaling?

Creating a Deployment

Adding resources to existing apps and servers

Moving workloads from one server to another

Adding additional replicas of apps and servers

https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/

Q36. What is etcd used for in Kubernetes?

Integration with cloud platforms

Network routing for the cluster

Kubernetes API security

Backend object storage for the Kubernetes API

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

Q37. A ________ is a ready-to-run software package, containing everything needed to run an application.

Container Repository

Container Runtime

Docker

Container Image

https://kubernetes.io/docs/concepts/containers/#container-images

Q38. To run a startup task before a Pod’s container starts up. What Kubernetes feature can help you ac-complish this?

Init container

Sidecar container

Startup probe

DaemonSet

https://kubernetes.io/docs/concepts/workloads/pods/init-containers/

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Linux Foundation KCNA Exam Syllabus Topics:

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