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RedHat EX280 Exam Syllabus Topics:

SectionWeightObjectives
Manage OpenShift Container Platform20%- Work with container images
  • 1. Locate, identify and examine images
    • 2. Manage image streams and registries
      - Manage and configure clusters via web console and CLI
      • 1. Examine cluster status and resources
        • 2. Monitor events, alerts and logs
          • 3. Create and delete projects
            Configure Networking and Access15%- Expose services externally
            • 1. Control ingress and network policies
              • 2. Create and manage routes
                - Troubleshoot software-defined networking
                Deploy and Manage Applications25%- Manage application lifecycles
                • 1. Update and rollback deployments
                  • 2. Manage replica sets and scaling
                    - Deploy applications from multiple sources
                    • 1. Use YAML manifests, templates and Helm charts
                      • 2. Use Kustomize and overlays
                        Work with Kubernetes Resources25%- Query, filter and modify resource attributes
                        • 1. Import/export and configure manifests
                          • 2. Use labels, selectors and annotations
                            - Manage configuration data
                            • 1. Create and use ConfigMaps
                              • 2. Create and use Secrets
                                Manage Authentication and Authorization15%- Configure identity providers
                                • 1. Set up HTPasswd and other providers
                                  - Manage users, groups and permissions
                                  • 1. Create/delete users and modify passwords
                                    • 2. Assign roles and adjust access rights

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                                      RedHat Red Hat Certified Specialist in OpenShift Administration exam Sample Questions (Q13-Q18):

                                      NEW QUESTION # 13
                                      Create Secure Route in Quart Project
                                      Task information Details:
                                      Create an edge route named htquart for service httpd , using the specified hostname and TLS certificate/key files.

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      * Switch to the quart project:
                                      oc project quart
                                      * Create the secure route:
                                      oc create route edge htquart \
                                      --service=httpd \
                                      --hostname=quart.apps.ocp4.example.com \
                                      --cert=./req.crt \
                                      --key=./req.key
                                      * Verify:
                                      oc get route htquart
                                      oc describe route htquart
                                      * Test resolution and access if DNS is available:
                                      curl -k https://quart.apps.ocp4.example.com
                                      This task checks route exposure, TLS termination, and secure ingress administration.


                                      NEW QUESTION # 14
                                      Install Helm Chart
                                      Task information Details:
                                      Add the Helm repository do280-repo and install the example-app release from the specified chart.

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      * Add the repository:
                                      helm
                                      repo add do280-repo http://helm.ocp4.example.com/charts
                                      * Refresh repositories:
                                      helm repo update
                                      * Install the chart:
                                      helm install example-app do280-repo/etherpad
                                      * Verify:
                                      helm list
                                      oc get all
                                      Notes:
                                      * The uploaded lab text appears to spell the chart name incorrectly as ehterpad.
                                      * In practice, use the actual chart name published in the repo. If the lab repo truly contains the typo, follow the repo index result.
                                      This task tests Helm repository management and application deployment.


                                      NEW QUESTION # 15
                                      Configure quotas
                                      Configure your OpenShift cluster to use quotas in the manhattan project with the following requirements:
                                      The name of the ResourceQuota resource is: ex280-quota
                                      The amount of memory consumed across all containers may not exceed 1Gi
                                      The total amount of CPU usage consumed across all containers may not exceed
                                      2 full cores
                                      The maximum number of replication controllers does not exceed 3 The maximum number of pods does not exceed 3 The maximum number of services does not exceed 6

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      $ oc project manhattan
                                      $ oc create quota ex280-quota -- hard=memory=1Gi,cpu=2,pods=3,services=6,replicationcontrollers=3
                                      $ oc get resourcequota


                                      NEW QUESTION # 16
                                      Scale Application Manually
                                      Task information Details:
                                      Scale the httpd deployment to 5 replicas .

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      * Scale the deployment:
                                      oc scale deployment httpd --replicas=5
                                      * Verify:
                                      oc get deployment httpd
                                      oc get pods -l app=httpd
                                      * Confirm the desired, current, and available replica counts match.
                                      This task checks direct workload scaling using the OpenShift CLI.


                                      NEW QUESTION # 17
                                      Deploy an application
                                      Deploy the application called oranges in the apples project so that the following conditions are true:
                                      The application uses the ex280sa service account
                                      No additional configuration components have been added or removed The application produces output

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      $ oc project mercury
                                      $ oc get pods
                                      $ oc get all | grep deploy
                                      $ oc describe deployment.apps/atlas | grep -L memory
                                      $ oc set resources deployment.apps/atlas --resources=memory=80Mi


                                      NEW QUESTION # 18
                                      ......

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