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Linux Foundation Kubernetes and Cloud Native Associate - KCNA Exam Questions

QUESTION NO: 1
Which of the following observability data streams would be most useful when desiring to plot resource consumption and predicted future resource exhaustion?

A. stdout B. Logs C. Metrics D. Traces

Correct Answer: C

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QUESTION NO: 2
If a Pod was waiting for container images to download on the scheduled node, what state would it be in?

A. Unknown B. Succeeded C. Failed D. Pending

Correct Answer: D

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QUESTION NO: 3
What is the minimum number of etcd members that are required for a highly available Kubernetes cluster?

A. Five etcd members. B. Three etcd members. C. Six etcd members. D. Two etcd members.

Correct Answer: B

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QUESTION NO: 4
What can be used to create a job that will run at specified times/dates or on a repeating schedule?

A. CronJob B. CalendarJob C. BatchJob D. Job

Correct Answer: A

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QUESTION NO: 5
Which tools enable Kubernetes HorizontalPodAutoscalers to use custom, application-generated metrics to trigger scaling events?

A. Prometheus and the prometheus-adapter. B. Graylog and the kubernetes-adapter. C. Graylog and graylog-autoscaler metrics. D. Grafana and Prometheus.

Correct Answer: A

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QUESTION NO: 6
What is the name of the lightweight Kubernetes distribution built for IoT and edge computing?

A. k1s B. k3s C. RKE D. OpenShift

Correct Answer: B

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QUESTION NO: 7
Which group of container runtimes provides additional sandboxed isolation and elevated security?

A. rune, cgroups B. crun, cri-o C. runsc, kata D. docker, containerd

Correct Answer: C

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QUESTION NO: 8
A Kubernetes Pod is returning a CrashLoopBackOff status. What is the most likely reason for this behavior?

A. There are insufficient resources allocated for the Pod. B. The Pod is unable to communicate with the Kubernetes API server. C. The application inside the container crashed after starting. D. The container's image is missing or cannot be pulled.

Correct Answer: C

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QUESTION NO: 9
The cloud native architecture centered around microservices provides a strong system that ensures
______________.

A. resiliency B. fallback C. high reachability D. failover

Correct Answer: A

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QUESTION NO: 10
What is the name of the Kubernetes resource used to expose an application?

A. DNS B. Service C. Deployment D. Port

Correct Answer: B

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QUESTION NO: 11
Which of the following would fall under the responsibilities of an SRE?

A. Submitting a budget for running an application in a cloud. B. Creating a monitoring baseline for an application. C. Developing a new application feature. D. Writing policy on how to submit a code change.

Correct Answer: B

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QUESTION NO: 12
In Kubernetes, what is the primary responsibility of the kubelet running on each worker node?

A. To provide internal DNS resolution and route service traffic between Pods and nodes. B. To manage cluster state information and handle all scheduling decisions for workloads. C. To allocate persistent storage volumes and manage distributed data replication for Pods. D. To ensure that containers defined in Pod specifications are running and remain healthy on the node.

Correct Answer: D

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QUESTION NO: 13
How do you perform a command in a running container of a Pod?

A. docker exec <pod> <command> B. kubectl attach <pod> -i <command> C. kubectl exec <pod> -- <command> D. kubectl run <pod> -- <command>

Correct Answer: C

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QUESTION NO: 14
Which of the following capabilities are you allowed to add to a container using the Restricted policy?

A. SETUID B. SYS_CHROOT C. CHOWN D. NET_BIND_SERVICE

Correct Answer: D

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QUESTION NO: 15
What are the most important resources to guarantee the performance of an etcd cluster?

A. CPU and RAM memory. B. Network throughput and CPU. C. Network throughput and disk I/O. D. CPU and disk capacity.

Correct Answer: C

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