EX380 sample questions

Question 1

A DevOps engineer is configuring OpenShift GitOps to manage a complex application stack. The requirement is to ensure that the database manifests are applied and healthy before the application deployment manifests are applied. Which feature of Argo CD should be utilized to define this ordering?

Accepted Answer

Sync Waves

Answer

Sync Windows

Answer

Resource Inclusions

Answer

Pre-Sync Hooks

Question 2

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 3

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 4

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 5

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 6

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.

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