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RedHat EX280 Exam Syllabus Topics:

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

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                                      RedHat Red Hat Certified Specialist in OpenShift Administration exam Sample Questions (Q26-Q31):

                                      NEW QUESTION # 26
                                      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 # 27
                                      Start a Probe in Project Start
                                      Task information Details:
                                      Add a Liveness Probe to the deployment in project start using the Web Console.

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      * Open the Web Console.
                                      * Switch to project start .
                                      * Navigate to: Workloads # Deployments
                                      * Select the target deployment.
                                      * Click the action menu and choose: Add Health Checks
                                      * Select Liveness Probe .
                                      * Configure the appropriate probe type:
                                      * HTTP
                                      * TCP
                                      * or Command
                                      * Enter the required endpoint or command based on the application.
                                      * Save the configuration.
                                      * Verify the deployment updates successfully and the pod status remains healthy.
                                      CLI alternative if needed:
                                      oc set probe deployment/ < deployment-name >
                                      --liveness --get-url=http://:8080/ --initial-delay-seconds=10
                                      This task measures health-check configuration for workload self-recovery.


                                      NEW QUESTION # 28
                                      Use Secret in Monday Project
                                      Task information Details:
                                      Use the secret created earlier as environment variables in deployment monday .

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      * Switch to the correct project if needed:
                                      oc project monday
                                      * Inject environment variables from the secret:
                                      oc set env deployment/monday --from=secret/magic
                                      * Verify:
                                      oc set env deployment/monday --list
                                      oc describe deployment monday
                                      Notes:
                                      * The uploaded lab references secret/file-secret, but Task 8 clearly intends the secret to be named magic .
                                      * In a real exam, match the actual secret name present in the cluster.
                                      This task tests secret consumption by workloads through environment variable injection.


                                      NEW QUESTION # 29
                                      Scale an application automatically
                                      Automatically scale the hydra application deployment configuration in the lerna project with the following requirements:
                                      Minimum number of replicas: 6 Maximum number of replicas: 9
                                      Target average CPU utilization: 60 percent Container CPU resource request: 25m Container CPU resource limit: 100m

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      $ oc project lerna
                                      $ oc get pods
                                      $ oc get all | grep deployment
                                      $ oc autoscale deployment.apps/hydra --max=9 --min=6 --cpu-percent=60
                                      $ oc get hpa
                                      $ oc set resources deployment.apps/hydra --limits=cpu=100m -- requests=cpu=25m
                                      $ oc describe deployment.apps/hydra | grep Limits -A3


                                      NEW QUESTION # 30
                                      Deploy Application in the Project QED
                                      Task information Details:
                                      Set the service account for the specified deployment in project qed to project1-sa .

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      * Ensure you are in the correct project:
                                      oc project qed
                                      * Set the service account on the deployment:
                                      oc set serviceaccount deployment/gitlab-skdjfklj project1-sa
                                      * Verify:
                                      oc get deployment gitlab-skdjfklj -o yaml | grep serviceAccount
                                      oc describe deployment gitlab-skdjfklj
                                      * If required, restart rollout:
                                      oc rollout restart deployment/gitlab-skdjfklj
                                      This task checks workload identity assignment through service accounts.


                                      NEW QUESTION # 31
                                      ......

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