KCNA試験無料問題集（203題）「Linux Foundation Kubernetes and Cloud Native Associate 認定」

出題：1

You have a Deployment with the following YAML definition:

You want to update the image to 'my-app:v2' without deleting and recreating the Deployment. Which Kubernetes command can you use to achieve this update?

A. kubectl set image deployment/my-app my-app-container=my-app:v2

B. kubectl scale deployment my-app -replicas=0

C. kubectl rollout restart deployment my-app

D. kubectl apply -f deployment.yaml

E. kubectl delete deployment my-app

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：2

Which of the following features is NOT a primary benefit of using a service mesh like Istio in a Kubernetes environment?

A. Dynamic traffic routing and fault tolerance capabilities

B. Enhanced observability with metrics, tracing, and logging

C. Simplified service discovery and load balancing across pods

D. Direct access to the underlying Kubernetes API for granular control

E. Improved security through mutual TLS authentication between services

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：3

You are running a web application with a high demand for CPU resources. Which Kubernetes scheduling strategy could help you ensure pods are scheduled on nodes with the most available CPU capacity?

A. Pod affinity

B. Pod anti-affinity

C. Node anti-affinity

D. Taints and tolerations

E. Node affinity

正解：E 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

You're running a microservices application in Kubernetes, and you're concerned about the cost associated with resource usage. Which of the following approaches is most effective for reducing cost without impacting performance?

A. Design your microservices to be stateless and idempotent, allowing them to be easily scaled and restarted without affecting application state.

B. Configure resource quotas for each namespace containing microservices to restrict their resource usage.

C. Use a horizontal pod autoscaler (HPA) to scale each microservice independently based on its specific resource needs.

D. Utilize serverless functions to replace all microservices, as they scale automatically and only consume resources when active.

E. Implement a distributed tracing system to monitor the resource consumption of individual microservices and identify areas for optimization.

正解：A,C,E 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：5

You are running a multi-cluster Kubernetes environment with Istio deployed. You want to enable mutual TLS authentication between services across different clusters. You have already configured Istio's 'mutualTLS' setting in the control plane. What additional step is required to enforce this security measure for inter-cluster communication?

A. Manually configure the 'istio.io/auth' annotation on all services in both clusters

B. Deploy a dedicated Istio control plane for each cluster and configure cross-cluster communication

C. Deploy a dedicated Istio sidecar proxy in each cluster to handle inter-cluster communication

D. Configure the 'gateway' setting in Istio to allow only encrypted traffic between clusters

E. Create a separate Kubernetes namespace for inter-cluster communication and configure Istio within that namespace

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：6

Consider a Kubernetes deployment where you have a microservice responsible for user authentication. You want to ensure that any communication to this service is encrypted and secure. What Kubernetes feature or open standard can help achieve this?

A. NetworkPolicy

B. TLS/SSL

C. Pod Security Policies (PSPs)

D. Kubernetes RBAC

E. Open Policy Agent (OPA)

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：7

You're managing a Kubernetes cluster with several deployments using resource requests and limits. Which of the following strategies can help you effectively manage resource utilization and potentially reduce costs?

A. Utilize resource quotas to restrict the total resources that can be consumed by namespaces.

B. Increase resource requests for all deployments to ensure enough resources are always available.

C. Set resource limits lower than requests to encourage efficient resource use.

D. Configure resource reservation to ensure a minimum amount of resources is always available.

E. Use Horizontal Pod Autoscaler (HPA) to adjust the number of pods based on resource utilization and load.

正解：A,D,E 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

Which of the following Kubernetes components is responsible for authenticating and authorizing users who access the Kubernetes API?

A. kube-proxy

B. kubectl

C. apiserver

D. etcd

E. kubelet

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：9

Your Kubernetes cluster has several nodes. A Pod is running on one of the nodes, but the node experiences a hardware failure and goes down. What happens to the Pod?

A. The Pod is automatically restarted on a different node.

B. The Pod is deleted, and the application is unavailable.

C. The Pod remains running on the failed node until the node is recovered.

D. The Pod remains running, but it becomes unreachable.

E. The Pod automatically migrates to another node, but the application might experience a brief interruption.

正解：E 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

Consider the following Kubernetes YAML definition for a Deployment:

Which of the following statements about this Deployment are true?

A. The Deployment will use the 'nginx:l. 14.2' image to create the Pods.

B. The Deployment will expose the Pods on port 80.

C. The Deployment will create a Service that exposes the Pods on port 80.

D. The Deployment will create 3 Pods with the label 'app: nginx'.

E. The Deployment will only create Pods with the label 'app: nginx' if a corresponding Service exists.

正解：A,D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

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