Free Linux Foundation KCNA Exam Questions

Become Linux Foundation Certified with updated KCNA exam questions and correct answers

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Total 605 Questions | Updated On: Jun 25, 2025

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Question 1

Your organization is considering moving to a serverless architecture for some of its microservices to improve scalability and reduce operational overhead. Which of the following services would be the most appropriate to move to a serverless architecture?

A : A long-running data transformation job that can take several hours to complete.

B : A real-time analytics service that needs to maintain WebSocket connections.

C : A user authentication service that has sporadic but extremely high demand.

D : A database service that requires persistent storage and complex transactions.

Answer: C

Question 2

You are managing a Kubernetes cluster with multiple nodes. One of your application pods suddenly starts consuming too much CPU and memory, affecting other workloads in the cluster. Which of the following actions should you take to ensure this pod doesn't starve other applications? (select 2)

A : Implement Pod Priority and Preemption.

B : Set resource limits on the CPU and memory for the pod.

C : Increase the resource quota for the namespace where the pod resides.

D : Scale up the nodes in the cluster.

E : Enable Horizontal Pod Autoscaling for that specific pod.

Answer: A,B

Question 3

In a Kubernetes-based cloud-native application using Serverless architecture, what kind of scaling is most commonly associated with Function-as-a-Service (FaaS)?

A : Manual scaling

B : Proactive scaling

C : Predictive scaling

D : Reactive scaling

Answer: D

Question 4

In a Kubernetes cluster, what is the primary role of a Service?

A : To monitor the health of the nodes

B : To balance load among Pods

C : To manage the lifecycle of a Pod

D : To provide network-level security for Pods

Answer: B

Question 5

How would you ensure that a Kubernetes PersistentVolume is only available to Pods in a specific namespace?

A : Use ResourceQuotas on the PersistentVolume

B : Set a StorageClass specifically for that namespace

C : Label the PersistentVolume and use label selectors in the PersistentVolumeClaim

D : Use NetworkPolicies to restrict access to the PersistentVolume

Answer: B

Page: 1 / 121

Total 605 Questions | Updated On: Jun 25, 2025

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