Free KCNA Exam Dumps Preview

Question 1

Single choice

Which of the following computing model doesn't require you to provision infrastructure?

1. A

   None of the above

2. B

   Bare Metal

3. C

   Compute Engine

4. D

   Virtual Machines

5. E

   Serverless

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Correct answerE

Explanation

Question 2

Single choice

What is autoscaling?

1. A

   Automatically measuring resource usage

2. B

   Automatically assigning workloads to nodes in a cluster

3. C

   Automatically repairing broken application instances

4. D

   Automatically adding or removing compute resources as needed

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Correct answerD

Explanation

https://kubernetes.io/blog/2016/07/autoscaling-in-kubernetes/
Autoscaling means automatically scaling up or down in response to real-time usage data.

Question 3

Single choice

What does the 'kops' acronym means?

1. A

   Kubernetes Open Platform Specification

2. B

   Kubernetes Operations

3. C

   Kubernetes Operators

4. D

   Kubernetes Operation Policy Specification

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Correct answerB

Explanation

Explanation:
https://github.com/kubernetes/kops

Graphical user interface, text, application, email

Question 4

Single choice

Which is NOT a use case for the Kubernetes dashboard?

1. A

   Troubleshooting any issues with applications

2. B

   Managing running applications

3. C

   Installing new Kubernetes cluster

4. D

   Managing the entire Kubernetes cluster

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Correct answerC

Question 5

Single choice

Which component of the kubernetes control-plane (master) are all requests to deploy and manage objects posted to?

1. A

   ETCD

2. B

   Controller Manager

3. C

   Kube-proxy

4. D

   API Server

5. E

   Kubelet

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Correct answerD

Explanation

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

Question 6

Single choice

Flux is built using which toolkit?

1. A

   CI/CD

2. B

   DevSecOps

3. C

   GitOps

4. D

   DevOps

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Correct answerC

Explanation

Explanation:
https://fluxcd.io/

Question 7

Single choice

Which of the following container runtime is planned to be deprecated in Kubernetes 1.20 and high-er?

1. A

   cri-o

2. B

   None of the options

3. C

   docker

4. D

   podman

5. E

   containerd

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Correct answerC

Explanation

Explanation:
https://kubernetes.io/blog/2020/12/02/dont-panic-kubernetes-and-docker/

Question 8

Single choice

Which of the following best describes a cloud-native app?

1. A

   An application where all logic is coded into a single large binary.

2. B

   An application that publishes an HTTPS web front-end.

3. C

   An application that takes advantages of cloud computing fromworks and their loosely coupled cloud services.

4. D

   An application that leverages services that are native to public cloud platforms such as Azure, GCP, and/or AWS.

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Correct answerC

Explanation

Explanation: Cloud-native apps leverage cloud computing frameworks and tend to be microservices based, where individual components of the app are coded as individual.

Question 9

Single choice

What is the functionality of the daemon set?

1. A

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

2. B

   To initialize the pod before starting the main pod

3. C

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

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Correct answerA

Explanation

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

Question 10

Single choice

What is the primary interface for Kubernetes cluster?

1. A

   Kubernetes Api

2. B

   Kubelet

3. C

   YAML

4. D

   Control Plane

5. E

   JSON

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Correct answerA

Explanation

Explanation:
https://kubernetes.io/docs/concepts/overview/components/#kube-apiserver

Question 11

Single choice

What can you use to add new resource types to your cluster?

1. A

   start container

2. B

   CustomResourceDefinitions

3. C

   init container

4. D

   Flux

5. E

   CRI-O

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Correct answerB

Explanation

Explanation:
https://kubernetes.io/docs/concepts/extend-kubernetes/api-extension/custom-resources/

Question 12

Single choice

'kubectl delete -n my-ns po,svc --all' will delete pods and services including uninitialized ones in the namespace 'my-ns'

1. A

   FALSE

2. B

   TRUE

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Correct answerB

Explanation

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

Question 13

Single choice

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

1. A

   kubectl get pods -o json

2. B

   kubectl get pods --all-namspaces

3. C

   kubectl get pods -o wide

4. D

   kubectl get pods -o jsonpath

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Correct answerA

Explanation

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

Question 14

Single choice

Which access control component of Kubernetes is responsible for authorization and decides what requestor is allowed to do?

1. A

   Service Account

2. B

   Role-based access control 'RBAC'

3. C

   Deployment

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Correct answerB

Explanation

Explanation:
https://kubernetes.io/docs/reference/access-authn-authz/authorization/

Question 15

Single choice

What tool allows us to build useful visual representations of prometheus data?

1. A

   Grafana

2. B

   kubectl

3. C

   Distributed system tracing

4. D

   Rook

5. E

   Kibana

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Correct answerA

Explanation

Explanation:
https://prometheus.io/

Question 16

Single choice

kubeadm is an administrative dashboard for kubernetes

1. A

   False

2. B

   True

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Correct answerA

Explanation

Explanation:
https://kubernetes.io/docs/reference/setup-tools/kubeadm/

Question 17

Single choice

What is the smallest possible unit in Kubernetes to run a container?

1. A

   pod

2. B

   docker

3. C

   service

4. D

   container

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Correct answerA

Explanation

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

Question 18

Single choice

Which of the following best describes the way kubernetes Role-based access control (RBAC) works?

1. A

   Kubernetes does not do RBAC

2. B

   Kubernetes RBAC states which users can perform which actions against which re-source

3. C

   Kubernetes RBAC lists which operations on which resources are denied to users

4. D

   Kubernetes RBAC is responsible for authenticating subjects such as users and groups

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Correct answerB

Explanation

Explanation:
https://kubernetes.io/docs/reference/access-authn-authz/rbac/

Question 19

Single choice

Have a pod 'hello' and a container in that pod 'green'.

Which of the following commands would get the logs for that container?

1. A

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

2. B

   alias k='kubectl'

   k logs hello -c green

3. C

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

4. D

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

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Correct answerB

Explanation

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