Understand the Primitives Used to Create Robust, Self-Healing, Application Deployments CKA Practice Questions (Page 1)

Questions 1–5

1. 1expert · hard

   A team runs a Deployment with an HPA that scales based on CPU utilization. They want to ensure that the HPA works correctly and that pods are scheduled reliably. They have set a CPU request of 250m on each pod. What else should they configure to ensure the HPA can make accurate scaling decisions?

   • ASet a memory request on each pod.
   • BSet a CPU limit on each pod.
   • CConfigure a PodDisruptionBudget.
   • DEnsure that the metrics-server is installed and collecting CPU metrics.
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   If a pod managed by a ReplicaSet is deleted, what action does the ReplicaSet controller take?

   • AIt creates a replacement pod to maintain the desired replica count
   • BIt restarts the deleted pod on the same node
   • CIt updates the desired replica count to match the current number of pods
   • DIt sends an alert but takes no further action
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A Deployment named `api` has `replicas: 3`. A node hosting one of the pods experiences a hardware failure, and the pod is permanently lost. What happens next?

   • AThe Deployment controller scales up the ReplicaSet to 4 replicas temporarily.
   • BThe scheduler manually recreates the pod on the same node after it recovers.
   • CThe ReplicaSet controller creates a replacement pod on a healthy node.
   • DThe pod is not replaced because the node failure is a voluntary disruption.
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   A Deployment `web` was updated from image v1 to v2 using a rolling update. After the update, the application is returning errors. The team wants to revert to the previous version as quickly as possible. Which command should they run?

   • A`kubectl scale deployment/web --replicas=0` and then scale back up
   • B`kubectl delete deployment/web` and recreate it with image v1
   • C`kubectl set image deployment/web web=v1`
   • D`kubectl rollout undo deployment/web`
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   What is the purpose of setting resource requests in a pod specification?

   • ATo guarantee a minimum amount of CPU and memory for the pod
   • BTo limit the maximum amount of CPU and memory the pod can use
   • CTo define the number of replicas for the pod
   • DTo specify the amount of storage the pod needs
   Reveal Solution Discussion Select an answer first