EX380 sample questions

Question 1

You are creating a Kustomize overlay for a production environment. The base `deployment.yaml` specifies 2 replicas, but production requires 10. Which Kustomize instruction is the most appropriate to achieve this change without duplicating the entire deployment manifest?

Accepted Answer

Define the 'replicas' field directly in the 'kustomization.yaml' file.

Answer

Use 'commonLabels' to force a scale update.

Answer

Use 'patchesJson6902' to target the replica field.

Answer

Create a 'configMapGenerator' to inject the value.

Question 2

When integrating Jenkins with OpenShift, you want to ensure that the Jenkins agent pods created during a build pipeline have specific resource limits defined to prevent them from consuming too much cluster capacity. How should this be configured in the Jenkinsfile?

Accepted Answer

Define a 'podTemplate' with a container specification that includes 'resourceRequest' and 'resourceLimit'.

Answer

Use the 'limitRange' parameter in the 'openshift.selector' method.

Answer

Configure the 'LimitRange' object in the OpenShift project, as Jenkins cannot define per-agent limits.

Answer

Set the global resource limits in the Jenkins master deployment configuration.

Question 3

A team is using Helm to manage application deployments on OpenShift. They need to ensure that a specific 'ConfigMap' is not overwritten during a `helm upgrade` if the file has been modified manually by operations staff for emergency hotfixes. Which Helm resource policy annotation should be added to the ConfigMap template?

Accepted Answer

helm.sh/resource-policy: keep

Answer

helm.sh/policy: immutable

Answer

helm.sh/ignore: true

Answer

helm.sh/hook: post-upgrade

Question 4

Which of the following scenarios describes a valid use case for implementing a Blue/Green deployment strategy using OpenShift Routes?

Accepted Answer

You require zero-downtime cutover between two distinct environments (active and idle) by switching the Route destination.

Answer

You want to update the application pod-by-pod to ensure capacity is maintained.

Answer

You need to automatically rollback if the CPU usage exceeds a threshold during startup.

Answer

You need to test a new version with a small percentage of users before a full rollout.

Question 5

Select TWO correct statements regarding the configuration of OpenShift GitOps (Argo CD) ApplicationSets. (Select TWO)

Accepted Answer

The List generator allows you to manually define a fixed list of clusters or configuration values to iterate over.

Accepted Answer

The Cluster generator automatically discovers clusters registered in Argo CD and deploys applications to them.

Answer

ApplicationSets can only deploy to the same cluster where OpenShift GitOps is installed.

Answer

ApplicationSets replace the need for AppProject resources entirely.

Question 6

You are troubleshooting a Jenkins pipeline that interacts with OpenShift. The pipeline fails with a permission error when attempting to `oc start-build`. What is the most likely cause and resolution?

Accepted Answer

The ServiceAccount used by the Jenkins agent does not have the 'edit' role in the project. Grant the role using `oc policy add-role-to-user`.

Answer

The Jenkins master pod has crashed. Restart the Jenkins statefulset.

Answer

The pipeline definition is missing the 'agent' directive. Add 'agent any' to the Jenkinsfile.

Answer

The OpenShift cluster is in read-only mode. Check the node status.

Free EX380 sample questions

You are creating a Kustomize overlay for a production environment. The base `deployment.yaml` specifies 2 replicas, but production requires 10. Which Kustomize instruction is the most appropriate to achieve this change without duplicating the entire deployment manifest?

When integrating Jenkins with OpenShift, you want to ensure that the Jenkins agent pods created during a build pipeline have specific resource limits defined to prevent them from consuming too much cluster capacity. How should this be configured in the Jenkinsfile?

Which of the following scenarios describes a valid use case for implementing a Blue/Green deployment strategy using OpenShift Routes?

Select TWO correct statements regarding the configuration of OpenShift GitOps (Argo CD) ApplicationSets. (Select TWO)

You are troubleshooting a Jenkins pipeline that interacts with OpenShift. The pipeline fails with a permission error when attempting to `oc start-build`. What is the most likely cause and resolution?

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