Question 1

What best describes Rook?

Options :

A : A virtual firewall plugin for Container Networking Interface (CNI) that operates on layers 3 and 4 of the OSI model

B : The default Role-based access control plugin that ships with Kubernetes Server API

C : A set of Kubernetes operators that fully controls deployment, management, and automatic recovery of various data storage solutions

D : A plugin that extends the functionality of Kubernetes Scheduler to be able to coordinate more complex scheduling functionality such as exponential backoff

Answer: C

Question 2

What query language can be used to filter JSON results in Kubectl responses?

Options :

A : BJSON

B : SQL

C : JSONPath

D : GraphQL

E : jq

Answer: C

Question 3

What is the name for the tool that manages communication between pods, injects a sidecar proxy container into each pod and directs network traffic through the proxy container?

Options :

A : namespace

B : Deployment

C : Network policy

D : Service mesh

E : Service

Answer: D

Question 4

Which of the following statements is true regarding the difference between a ConfigMap and a Secret in Kubernetes?

Options :

A : Secrets are versioned resources, while ConfigMaps are not.

B : ConfigMaps are for non-sensitive information, while Secrets are for sensitive information.

C : ConfigMaps are encrypted at rest, while Secrets are not.

D : ConfigMaps can only be mounted as volumes, while Secrets can be exposed as environment variables.

Answer: B

Question 5

You are tasked with implementing a serverless function that performs data transformations. However, your organization is heavily invested in Kubernetes. What would be the best approach to deploy serverless functions in this Kubernetes-based environment?

Options :

A : Use a CronJob in Kubernetes to schedule the serverless function execution.

B : Deploy the function as a traditional Kubernetes Deployment and scale pods manually.

C : Abandon Kubernetes and migrate all services to a cloud provider-s serverless offering.

D : Use Kubeless to deploy serverless functions on your existing Kubernetes cluster.

Answer: D

Free KCNA Mock Exam – Practice Online Confidently

Buying Options: