A team is using a Deployment to manage a web application. They need to roll back to a previous version because the latest update introduced a bug. They have not changed the Deployment's revision history limit. Which action should they take to roll back to the previous version?

Run 'kubectl delete deployment/web-app' and recreate it with the old image.

Run 'kubectl rollout undo deployment/web-app'.

Run 'kubectl scale deployment/web-app --replicas=0' and then scale back up.

Run 'kubectl set image deployment/web-app web-app=old-image:1.0'.

A team manages a web application using a Deployment. They need to perform a rolling update to a new container image. During the update, they want to ensure that at least 75% of the desired Pods are always available, and they want to avoid creating too many extra Pods at once. Which rolling update configuration should they use?

Set maxUnavailable=25% and maxSurge=25%.

Set maxUnavailable=50% and maxSurge=0%.

Set maxUnavailable=0 and maxSurge=100%.

Set maxUnavailable=100% and maxSurge=100%.

A ReplicaSet is configured with spec.replicas=3 and a selector that matches 'app=web'. An administrator manually deletes one of the Pods. What will happen?

The ReplicaSet will not create a new Pod because the deletion was manual.

The ReplicaSet will create a new Pod only if the deleted Pod was not healthy.

The ReplicaSet will scale down to 2 replicas to match the current state.

The ReplicaSet will automatically create a new Pod to replace the deleted one, bringing the count back to 3.

Juniper NetworksCertified Associate, Cloud

Domain 6Objective 2

Kubernetes API Objects (Pods, ReplicaSets, Deployments, Services) JN0-214 Practice Questions (Page 1)

Part of the Cloud Orchestration with Kubernetes domain, which makes up ~10% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–6 in this domain), expect 1–2 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)

26questions here

6free pages

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Questions 1–5

1expert · medium
A team is using a Deployment to manage a web application. They need to roll back to a previous version because the latest update introduced a bug. They have not changed the Deployment's revision history limit. Which action should they take to roll back to the previous version?
Select an answer first
2application · medium
A team manages a web application using a Deployment. They need to perform a rolling update to a new container image. During the update, they want to ensure that at least 75% of the desired Pods are always available, and they want to avoid creating too many extra Pods at once. Which rolling update configuration should they use?
Select an answer first
3foundation · easy
In which Pod phase does a Pod remain if the kubelet cannot communicate with the API server to report its status?
Select an answer first
4application · easy
A ReplicaSet is configured with spec.replicas=3 and a selector that matches 'app=web'. An administrator manually deletes one of the Pods. What will happen?
Select an answer first
5foundation · easy
Which part of a Pod manifest is used to declare how much CPU and memory a container is allowed to use?
Select an answer first

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Kubernetes API Objects (Pods, ReplicaSets, Deployments, Services) JN0-214 Practice Questions (Page 1)

Questions 1–5

A team is using a Deployment to manage a web application. They need to roll back to a previous version because the latest update introduced a bug. They have not changed the Deployment's revision history limit. Which action should they take to roll back to the previous version?

In which Pod phase does a Pod remain if the kubelet cannot communicate with the API server to report its status?

A ReplicaSet is configured with spec.replicas=3 and a selector that matches 'app=web'. An administrator manually deletes one of the Pods. What will happen?

Which part of a Pod manifest is used to declare how much CPU and memory a container is allowed to use?

Keep studying — Cloud Orchestration with Kubernetes