Kubernetes API Objects (Pods, ReplicaSets, Deployments, Services) JN0-214 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   What is the role of a Deployment in Kubernetes?

   • ATo provide a stable IP address for a set of Pods
   • BTo run a single container on a node
   • CTo manage ReplicaSets and provide declarative updates, rollbacks, and scaling
   • DTo expose Pods to external traffic
   Reveal Solution Discussion Select an answer first
2. 12application · medium

   A Pod running a long-lived data processing job has been observed in the 'Pending' phase for over 10 minutes. The cluster has sufficient CPU and memory resources. Which condition is the most likely cause of the Pod remaining in the 'Pending' phase?

   • AThe Pod's container image is being pulled from a private registry and the imagePullSecrets are misconfigured.
   • BThe container inside the Pod has crashed and is in a CrashLoopBackOff state.
   • CThe Pod's liveness probe is failing, causing the kubelet to restart the container.
   • DThe Pod has a nodeSelector or affinity rule that does not match any available node.
   Reveal Solution Discussion Select an answer first
4. 13foundation · easy

   What is the primary role of a Service in Kubernetes?

   • ATo provide a stable network endpoint for a set of Pods
   • BTo manage the lifecycle of Pods
   • CTo store configuration data
   • DTo schedule Pods onto nodes
   Reveal Solution Discussion Select an answer first
5. 14foundation · easy

   Which Deployment strategy terminates all existing Pods before creating new ones?

   • ABlue-green
   • BRolling update
   • CCanary
   • DRecreate
   Reveal Solution Discussion Select an answer first
6. 15application · medium

   A team has a ReplicaSet named 'web-rs' that manages Pods with the label 'app=web'. They need to temporarily increase the number of running Pods from 3 to 5 for a load test, and then revert back to 3. They also want to ensure that the Service 'web-svc' continues to route traffic to all running Pods during the test. Which action should they take?

   • AUse 'kubectl scale deployment web-rs --replicas=5' and then 'kubectl scale deployment web-rs --replicas=3'.
   • BCreate a second ReplicaSet with the same label selector and 2 replicas, then delete it after the test.
   • CEdit the ReplicaSet manifest and change spec.replicas from 3 to 5, then apply it. After the test, change it back to 3 and apply again.
   • DModify the Service's selector to match a new label 'app=web-test' and add that label to the existing Pods.
   Reveal Solution Discussion Select an answer first