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 manages one or more ReplicaSets and coordinates rolling updates by creating a new ReplicaSet and scaling it up while scaling down the old one.

Question 2

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

Accepted Answer

kubectl set image deployment/ =

Answer

The `kubectl set image` command updates a container's image in a running Deployment, triggering a rolling update automatically.

Question 3

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

Accepted Answer

kubectl rollout undo deployment/<name>

Answer

The `kubectl rollout undo deployment/<name>` command reverts the Deployment to its previous revision by scaling up the old ReplicaSet.

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

maxSurge sets how many additional Pods beyond the desired count may run simultaneously during a rolling update, allowing new Pods to start before old ones terminate.

Question 5

Which command shows the rollout history of a Kubernetes Deployment?

Accepted Answer

kubectl rollout history deployment/<name>

Answer

The `kubectl rollout history deployment/<name>` command lists previous revisions of the Deployment along with their change causes.

(CKA) Certified Kubernetes Associate Practice Test

(CKA) Certified Kubernetes Associate Practice Test

CKA CKA Workload Management and Scheduling