KCNA practice questions 271–280

1. Question 271 · 282 in bank

   A DevOps engineer is preparing worker-1 for maintenance. The node is running multiple Pods, but workloads must be safely evicted and rescheduled onto other nodes. Which kubectl command should the engineer use?

   • Akubectl delete node worker-1 --delete-emptydir-data
   • Bkubectl drain worker-1 --ignore-daemonsets
   • Ckubectl scale deployment --replicas=0 --namespace=production
   • Dkubectl cordon worker-1 --daemonsets=off

   Show answer

   Answer: B

   Next question

2. Question 272 · 282 in bank

   Which CNCF project is primarily used as a high-performance proxy for microservices, handling service-to-service communication, load balancing, and observability in service meshes?

   • AHelm
   • BFluentd
   • CEnvoy
   • DPrometheus

   Show answer

   Answer: C

   Next question

3. Question 273 · 282 in bank

   Which Kubernetes feature is the simplest way to force a Pod or Deployment to run only on nodes with a specific label?

   • ATaint
   • BNodeSelector
   • CNodeAffinity
   • DToleration

   Show answer

   Answer: B

   Next question

4. Question 274 · 282 in bank

   What is the primary purpose of an Ingress resource in Kubernetes?

   • ATo monitor the health status of application Pods.
   • BTo expose internal services to external web traffic.
   • CTo store configuration data used by applications.
   • DTo manage persistent volumes for application data.

   Show answer

   Answer: B

   Next question

5. Question 275 · 282 in bank

   In Kubernetes, how do Namespaces differ from Labels in managing resources within a cluster?

   • ANamespaces can only contain Pods, but Labels can be applied to any Kubernetes resource.
   • BNamespaces are assigned statically, while Labels can be modified dynamically.
   • CNamespaces are only used for access control, while Labels are solely for resource monitoring.
   • DNamespaces are used to isolate resources, while Labels are used for query and selection.

   Show answer

   Answer: D

   Next question

6. Question 276 · 282 in bank

   A data science team is deploying a machine learning workload that performs best on nodes labeled disk=ssd. However, the Pods must still be able to run on other nodes if no SSD nodes are available. Which scheduling rule should they configure?

   • ANode Affinity with PreferredDuringSchedulingIgnoredDuringExecution
   • BPod Anti-Affinity
   • CTaints and Tolerations
   • DNode Affinity with RequiredDuringSchedulingIgnoredDuringExecution

   Show answer

   Answer: A

   Next question

7. Question 277 · 282 in bank

   What is the main role of CNCF Ambassadors in the cloud native ecosystem?

   • AThey promote cloud native adoption by supporting communities, organizing events, and advocating for CNCF projects.
   • BThey handle CNCF operations by managing budgets, securing sponsors, and negotiating agreements.
   • CThey design Kubernetes features by writing code, planning releases, and coordinating development.
   • DThey manage project governance by guiding development, reviewing code, and approving changes.

   Show answer

   Answer: A

   Next question

8. Question 278 · 282 in bank

   Prometheus has 4 core metric types: Summary, Histogram, Gauge. What is the 4th metric type?

   • ASampler
   • BCounter
   • CFinal
   • DTotal

   Show answer

   Answer: B

   Next question

9. Question 279 · 282 in bank

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

   • ABy attaching the ServiceAccount directly to the kube-scheduler to change how the Pod is scheduled.
   • BBy specifying the ServiceAccount name in the Pod specs, Kubernetes mounts its token as a volume.
   • CBy embedding the ServiceAccount token inside the container image at build time.
   • DBy converting the ServiceAccount into a ConfigMap that the Pod consumes as environment variables.

   Show answer

   Answer: B

   Next question

10. Question 280 · 282 in bank

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

    • AController Manager
    • BKubernetes API Server
    • Ckubelet
    • Detcd

    Show answer

    Answer: A

    Next question

Keyboard:J Kmove between questionsA–Dselect an answerRshow or hide the answer← →change page

KCNA practice, question 271. 282 questions available.