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RedHat EX280 Exam Syllabus Topics:

SectionWeightObjectives
Work with Kubernetes Resources25%- Manage configuration data
  • 1. Create and use ConfigMaps
    • 2. Create and use Secrets
      - Query, filter and modify resource attributes
      • 1. Use labels, selectors and annotations
        • 2. Import/export and configure manifests
          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. Monitor events, alerts and logs
                • 2. Examine cluster status and resources
                  • 3. Create and delete projects
                    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 Kustomize and overlays
                          • 2. Use YAML manifests, templates and Helm charts
                            Manage Authentication and Authorization15%- Manage users, groups and permissions
                            • 1. Assign roles and adjust access rights
                              • 2. Create/delete users and modify passwords
                                - Configure identity providers
                                • 1. Set up HTPasswd and other providers
                                  Configure Networking and Access15%- Troubleshoot software-defined networking
                                  - Expose services externally
                                  • 1. Control ingress and network policies
                                    • 2. Create and manage routes

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                                      RedHat Red Hat Certified Specialist in OpenShift Administration exam Sample Questions (Q17-Q22):

                                      NEW QUESTION # 17
                                      Manage Identity Provider
                                      Task information Details:
                                      Create the following HTPasswd users: bob, qwerty, john, armstrong, natasha, harry, susan .
                                      Create a secret from the HTPasswd file in openshift-config .
                                      Configure cluster OAuth to use the HTPasswd identity provider.
                                      Restart the OAuth pods so the new authentication configuration takes effect.

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      * Create the initial HTPasswd file with the first user:
                                      htpasswd -c -B -b /tmp/htpass.txt bob indionce
                                      * Add the remaining users:
                                      htpasswd -b /tmp/htpass.txt qwerty catalog
                                      htpasswd -b /tmp/htpass.txt john john123
                                      htpasswd -b /tmp/htpass.txt armstrong natasha123
                                      htpasswd -b /tmp/htpass.txt natasha arthstrong
                                      htpasswd -b /tmp/htpass.txt harry harry123
                                      htpasswd -b /tmp/htpass.txt susan susuan123
                                      * Create the secret in openshift-config :
                                      oc create secret generic ex280-secure --from-file=htpasswd=/tmp/htpass.txt -n openshift-config
                                      * Edit OAuth and add the HTPasswd identity provider:
                                      oc edit oauth cluster
                                      * Use a valid structure like this:
                                      spec:
                                      identityProviders:
                                      - name: ex280-idp-secure
                                      mappingMethod: claim
                                      type: HTPasswd
                                      htpasswd:
                                      fileData:
                                      name: ex280-secure
                                      * Save and exit.
                                      * Restart OAuth pods:
                                      oc delete pod -n openshift-authentication -l app=oauth-openshift
                                      * Verify:
                                      oc get pods -n openshift-authentication
                                      oc get oauth cluster -o yaml
                                      This task validates OpenShift local authentication configuration through HTPasswd and cluster OAuth integration.


                                      NEW QUESTION # 18
                                      Create Project Template
                                      Task information Details:
                                      Generate the bootstrap project template, create it in openshift-config , update the cluster project configuration to use the template, and create a new project to validate it.

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      * Generate the default template:
                                      oc adm create-bootstrap-project-template -o yaml > template.yaml
                                      * Review and edit template.yaml if required.
                                      * Create the template in openshift-config:
                                      oc create -f template.yaml -n openshift-config
                                      * Edit the cluster project configuration:
                                      oc edit project.config.openshift.io/cluster
                                      * Add or update:
                                      spec:
                                      projectRequestTemplate:
                                      name: project-request
                                      * Save and exit.
                                      * Create a test project:
                                      oc new-project test123
                                      * Verify the template behavior:
                                      oc get project test123 -o yaml
                                      Notes:
                                      * The uploaded lab text shows projects.config.openshift.io cluster-admin; the standard resource is project.
                                      config.openshift.io/cluster.
                                      This task checks cluster-wide customization of new-project creation behavior.


                                      NEW QUESTION # 19
                                      Create Resource Quota for Project Rocky
                                      Task information Details:
                                      Use project rocky and create a quota named rocky-quota with limits for CPU, memory, pods, services, replication controllers, and secrets.

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      * Ensure the project exists and switch to it:
                                      oc new-project rocky
                                      oc project rocky
                                      * Create the quota:
                                      oc create quota rocky-quota \
                                      --hard=limits.cpu=2,limits.memory=1Gi,pods=3,services=6,replicationcontrollers=6,secrets=6
                                      * Verify:
                                      oc get resourcequota -n rocky
                                      oc describe quota rocky-quota -n rocky
                                      Notes:
                                      * The lab text uses cpu=2,memory=1G and secret=6; in real OpenShift usage, the more reliable forms are limits.cpu, limits.memory, and secrets.
                                      * If the exam specifically expects the exact resource names shown in the lab environment, use what the cluster accepts.
                                      This task checks quota enforcement and namespace resource governance.


                                      NEW QUESTION # 20
                                      Configure an application to use a secret
                                      Configure the application called qed in the math project with the following requirements:
                                      The application uses the secret previously created called: magic The secret defines an environment variable with name: DECODER_RING The application output no longer displays: Sorry, application is not configured correctly.

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      $ oc get all | grep deploy
                                      $ oc set env --from=secret/magic deployment.apps/qed


                                      NEW QUESTION # 21
                                      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 # 22
                                      ......

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