What is a primary benefit of containers compared to traditional virtual machines?

Containers provide stronger isolation than virtual machines.

Containers require a hypervisor to run on a host.

Containers are more lightweight and start faster because they share the host OS kernel.

Containers include a full guest operating system for each application.

A web application takes about 30 seconds to initialize and load its cache before it can serve traffic. The team wants to ensure that during this startup period, the application is not sent traffic, but once it's ready, it should receive requests. Which probe configuration should they use?

A readinessProbe with a periodSeconds of 30 and a livenessProbe with the same settings

A startupProbe with a failureThreshold of 30 and no other probes

A readinessProbe with an initialDelaySeconds of 30 and a livenessProbe with a longer period

A livenessProbe with an initialDelaySeconds of 30 and no readinessProbe

In Kubernetes, what is the purpose of setting a resource request for a container?

To limit the maximum amount of CPU and memory the container can use

To specify the minimum amount of CPU and memory the container needs

To define the number of replicas for a deployment

To specify the storage size for a persistent volume

A team updated a Deployment to a new container image version. After the update, the application started returning errors. They need to revert to the previous working version as quickly as possible. What should they do?

Run `kubectl delete deployment/myapp` and recreate it with the old image

Run `kubectl edit deployment/myapp` and manually change the image back

Run `kubectl scale deployment/myapp --replicas=0` and then scale back up

Run `kubectl rollout undo deployment/myapp`

A web application is deployed in a Kubernetes cluster and needs to be accessible from the internet on a custom domain (e.g., app.example.com) using HTTP. The cluster already has an Ingress controller installed. What should the team configure to route external traffic to the application's Service?

A Service of type LoadBalancer and point the DNS record to its external IP

A ClusterIP Service and rely on kube-proxy for external access

A Service of type NodePort and access it via the node's IP and port

An Ingress resource with a host rule for app.example.com and a backend pointing to the Service

Juniper NetworksCertified Associate, Cloud

Domain 6Objective 1

Creating and Managing Containers in Kubernetes JN0-214 Practice Questions (Page 3)

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 11–15

11foundation · easy
What is a primary benefit of containers compared to traditional virtual machines?
Select an answer first
12application · medium
A web application takes about 30 seconds to initialize and load its cache before it can serve traffic. The team wants to ensure that during this startup period, the application is not sent traffic, but once it's ready, it should receive requests. Which probe configuration should they use?
Select an answer first
13foundation · easy
In Kubernetes, what is the purpose of setting a resource request for a container?
Select an answer first
14application · medium
A team updated a Deployment to a new container image version. After the update, the application started returning errors. They need to revert to the previous working version as quickly as possible. What should they do?
Select an answer first
15application · medium
A web application is deployed in a Kubernetes cluster and needs to be accessible from the internet on a custom domain (e.g., app.example.com) using HTTP. The cluster already has an Ingress controller installed. What should the team configure to route external traffic to the application's Service?
Select an answer first

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