A company runs a microservices application in Kubernetes. The frontend service needs to communicate with a backend service that has three replicas. The backend pods have the label `app: backend`. Which configuration should the frontend use to reliably reach the backend?

Use a headless Service and connect to the first pod in the list

Use the IP address of one specific backend pod directly

Create an Ingress resource pointing to the backend pods

Create a Service of type ClusterIP with a selector matching `app: backend` and use its DNS name

A platform team manages a shared Kubernetes cluster for multiple development teams. They need to isolate the `finance` team's workloads from the `engineering` team's workloads so that resource quotas and access controls can be applied separately. What should they configure?

Create a separate Kubernetes cluster for each team

Deploy all workloads in the default namespace and use labels to distinguish them

Create a separate Namespace for each team and deploy their workloads within those namespaces

Use a single Namespace and apply NetworkPolicies to restrict traffic

A DevOps engineer built a container image locally with Docker and pushed it to a private registry. They now need to deploy this image as a single running instance in a Kubernetes cluster for a quick smoke test, without creating a Deployment or managing replicas. Which command should they use?

kubectl apply -f smoke-test.yaml --record

kubectl run smoke-test --image=registry.example.com/app:v1 --restart=Never

docker run -d --name smoke-test registry.example.com/app:v1

kubectl create deployment smoke-test --image=registry.example.com/app:v1

Which command is used to roll back a deployment to the previous revision?

kubectl rollout undo deployment my-deployment

kubectl revert deployment my-deployment

kubectl undo deployment my-deployment

kubectl rollback deployment my-deployment

Juniper NetworksCertified Associate, Cloud

Domain 6Objective 1

Creating and Managing Containers in Kubernetes JN0-214 Practice Questions (Page 5)

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 40 practice questions to prepare you well beyond it. (estimate)

40questions here

8free pages

14concepts

Questions 21–25

21foundation · easy
Which Docker command is used to create and start a container from an image?
Select an answer first
22application · medium
A company runs a microservices application in Kubernetes. The frontend service needs to communicate with a backend service that has three replicas. The backend pods have the label `app: backend`. Which configuration should the frontend use to reliably reach the backend?
Select an answer first
23application · medium
A platform team manages a shared Kubernetes cluster for multiple development teams. They need to isolate the `finance` team's workloads from the `engineering` team's workloads so that resource quotas and access controls can be applied separately. What should they configure?
Select an answer first
24application · medium
A DevOps engineer built a container image locally with Docker and pushed it to a private registry. They now need to deploy this image as a single running instance in a Kubernetes cluster for a quick smoke test, without creating a Deployment or managing replicas. Which command should they use?
Select an answer first
25foundation · easy
Which command is used to roll back a deployment to the previous revision?
Select an answer first

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