KCNA試験無料問題集（346題）「Linux Foundation Kubernetes and Cloud Native Associate 認定」

出題：1

Which command correctly uses kubectl exec to inspect environment variables inside a running container?

A. Run kubectl exec <pod-name> -- list config

B. Run kubectl exec <pod-name> -- show variables

C. Run kubectl exec <pod-name> -- env

D. Run kubectl exec <pod-name> -- get env

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：2

Which of the following options is true about considerations for large Kubernetes clusters?

A. Kubernetes supports up to 50 nodes and recommends no more than 1000 containers per node.

B. Kubernetes supports up to 5000 nodes and recommends no more than 500 pods per node.

C. Kubernetes supports up to 5000 nodes and recommends no more than 110 pods per node.

D. Kubernetes supports up to 1000 nodes and recommends no more than 1000 containers per node.

正解：C 解答を投票する

出題：3

What is Flux constructed with?

A. Helm Toolkit

B. GitOps Toolkit

C. GitHub Actions Toolkit

D. GitLab Environment Toolkit

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：4

What is the order of 4C's in Cloud Native Security, starting with the layer that a user has the most control over?

A. Cloud -> Container -> Cluster -> Code

B. Cloud -> Container -> Cluster -> Code

C. Cluster -> Container -> Code -> Cloud

D. Code -> Container -> Cluster -> Cloud

正解：D 解答を投票する

出題：5

What does vertical scaling an application deployment describe best?

A. The act of adding/removing node instances to the cluster to meet demand.

B. The act of adding/removing resources to applications to meet demand.

C. The act of adding/removing application instances of the same application to meet demand.

D. The act of adding/removing applications to meet demand.

正解：B 解答を投票する

出題：6

Why do administrators need a container orchestration tool?

A. Container orchestration tools such as Kubernetes are the future.

B. To assess the security risks of the container images used in production.

C. To learn how to transform monolithic applications into microservices.

D. To manage the lifecycle of an elevated number of containers.

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：7

How can a Pod be configured to use a ServiceAccount for authenticated API access?

A. By embedding the ServiceAccount token inside the container image at build time.

B. By attaching the ServiceAccount directly to the kube-scheduler to change how the Pod is scheduled.

C. By converting the ServiceAccount into a ConfigMap that the Pod consumes as environment variables.

D. By specifying the ServiceAccount name in the Pod specs, Kubernetes mounts its token as a volume.

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：8

Let's assume that an organization needs to process large amounts of data in bursts, on a cloud- based Kubernetes cluster. For instance: each Monday morning, they need to run a batch of 1000 compute jobs of 1 hour each, and these jobs must be completed by Monday night. What's going to be the most cost-effective method?

A. Use PriorityClasses so that the weekly batch job gets priority over other workloads running on the cluster, and can be completed on time.

B. Run a group of nodes with the exact required size to complete the batch on time, and use a combination of taints, tolerations, and nodeSelectors to reserve these nodes to the batch jobs.

C. Commit to a specific level of spending to get discounted prices (with e.g. "reserved instances" or similar mechanisms).

D. Leverage the Kubernetes Cluster Autoscaler to automatically start and stop nodes as they're needed.

正解：D 解答を投票する

出題：9

What is the default eviction timeout when the Ready condition of a node is Unknown or False?

A. Thirty minutes.

B. Five minutes.

C. Thirty seconds.

D. One minute.

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：10

What is a Kubernetes service with no cluster IP address called?

A. Nodeless Service

B. Headless Service

C. Specless Service

D. IPLess Service

正解：B 解答を投票する

出題：11

In a Kubernetes cluster, which component is responsible for maintaining the desired state of applications by reconciling resources such as Deployments and ReplicaSets?

A. Controller Manager

B. Kubernetes API Server

C. etcd

D. kubelet

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：12

Which key-value store is used to persist Kubernetes cluster data?

A. ZooKeeper

B. ControlPlaneStore

C. etcd

D. Redis

正解：C 解答を投票する

KCNA試験無料問題集「Linux Foundation Kubernetes and Cloud Native Associate 認定」