CKA CKA Workload Management and Scheduling

Question 1

What is the relationship between a Deployment and a ReplicaSet in Kubernetes?

Accepted Answer

A Deployment creates and manages ReplicaSets to achieve rolling updates and rollbacks

Answer

A Deployment replaces ReplicaSets entirely

Answer

A ReplicaSet manages multiple Deployments

Answer

They are identical objects with different names

Question 2

Which kubectl command triggers a rolling update on a Deployment by changing its container image?

Accepted Answer

kubectl set image deployment/ =

Answer

kubectl apply -f deployment.yaml

Answer

kubectl rollout restart deployment/<name>

Answer

kubectl edit replicaset <name>

Question 3

How do you roll back a Deployment to its previous revision in Kubernetes?

Accepted Answer

kubectl rollout undo deployment/<name>

Answer

kubectl delete deployment <name>

Answer

kubectl revert deployment/<name>

Answer

kubectl scale deployment/<name> --replicas=0

Question 4

What does the 'maxSurge' field in a Deployment's rolling update strategy control?

Accepted Answer

The maximum number of extra Pods that can exist above the desired replica count during an update

Answer

The maximum number of Pods that can be unavailable during an update

Answer

The maximum number of failed Pods before the rollout stops

Answer

The maximum CPU usage allowed during a rollout

Question 5

Which command shows the rollout history of a Kubernetes Deployment?

Accepted Answer

kubectl rollout history deployment/<name>

Answer

kubectl log deployment/<name>

Answer

kubectl describe deployment/<name>

Answer

kubectl get events --field-selector=involvedObject.kind=Deployment

Question 6

What is the purpose of the 'minReadySeconds' field in a Deployment spec?

Accepted Answer

Specifies how many seconds a new Pod must be ready before it is considered available

Answer

Sets the minimum time a container must run before probes start

Answer

Limits how quickly new Pods can be created during a rollout

Answer

Defines the grace period for Pod termination