Kubernetes/Kubernetes quiz

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Kubernetes quiz

10 questions covering the introduction and foundations lessons. Choose your answers, then read the explanations.

Review Kubernetes foundations

CHECK YOUR UNDERSTANDING

Check the core ideas

Choose one answer per question, then read the explanation. This practice does not record course completion.

1. What does Kubernetes orchestrate?Containerized workloads across a clusterSource-code reviewsBusiness requirements

2. What does replicas: 3 describe?Three guaranteed ready copiesThe desired number of copiesThree physical servers

3. How should you deliver a container update?Edit every running container manuallyReuse a version without recording changesBuild and deploy a new versioned image

4. What can prevent an extra replica from running?Insufficient cluster resourcesUsing declarative configurationKeeping configuration in version control

5. What should drive the decision to use Kubernetes?Its popularity aloneOperational needs and team capacityThe assumption that it removes all maintenance

6. The API accepts a Deployment with three replicas. What does the successful response establish?All three replicas are already ready.The requested Deployment operation was accepted and stored.Each Pod has a node assignment.The application passed its readiness probe.

7. A ReplicaSet requests three replicas. Two Pods are ready and a third active Pod cannot be scheduled. What should you expect?The ReplicaSet creates Pods repeatedly until three are ready.The scheduler starts the third Pod without a node.The existing third Pod can remain Pending while the ready count stays at two.The requested count automatically drops to two.

8. Which component chooses a node, and which arranges container startup there?The scheduler chooses the node; kubelet works with the runtime to start containers.The ReplicaSet chooses the node; etcd starts containers.kubelet chooses any node; the scheduler starts containers.The API server chooses the node and directly executes containers.

9. You delete one Pod owned by a ReplicaSet while the Deployment still requests three replicas. What is the expected recovery?The same Pod UID moves to another node.The Deployment permanently changes its target to two.Deleting a Pod restarts a container inside that same Pod.The controller creates a replacement Pod with a new UID, subject to normal startup constraints.

10. A Pod is Running, but its readiness probe fails. What is the strongest supported conclusion?The application is ready because Running guarantees health.The process has started, but the Pod is not ready to serve normal Service traffic.The scheduler must immediately place the same Pod on another node.The ReplicaSet must increase its desired replica count.

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