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RedHat EX280 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Manage Authentication and Authorization15%- Configure identity providers
  • 1. Set up HTPasswd and other providers
    - Manage users, groups and permissions
    • 1. Assign roles and adjust access rights
      • 2. Create/delete users and modify passwords
        Topic 2: Manage OpenShift Container Platform20%- 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
              - Work with container images
              • 1. Manage image streams and registries
                • 2. Locate, identify and examine images
                  Topic 3: Configure Networking and Access15%- Expose services externally
                  • 1. Create and manage routes
                    • 2. Control ingress and network policies
                      - Troubleshoot software-defined networking
                      Topic 4: 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
                              Topic 5: Work with Kubernetes Resources25%- Query, filter and modify resource attributes
                              • 1. Use labels, selectors and annotations
                                • 2. Import/export and configure manifests
                                  - Manage configuration data
                                  • 1. Create and use ConfigMaps
                                    • 2. Create and use Secrets

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                                      EX280 Exam Pass Guide | EX280 Exam Questions Answers

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

                                      NEW QUESTION # 17
                                      Create LimitRanges for Project Darpa
                                      Task information Details:
                                      Switch to project darpa and create a LimitRange with Pod and Container minimums and maximums of CPU and memory, plus default container values.

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      * Switch to the target project:
                                      oc project darpa
                                      * Create a YAML file, for example limitrange.yaml:
                                      apiVersion: v1
                                      kind: LimitRange
                                      metadata:
                                      name: darpa-limits
                                      namespace: darpa
                                      spec:
                                      limits:
                                      - type: Pod
                                      max:
                                      cpu: 300m
                                      memory: 300Mi
                                      min:
                                      cpu: 5m
                                      memory: 5Mi
                                      - type: Container
                                      max:
                                      cpu: 300m
                                      memory: 300Mi
                                      min:
                                      cpu: 5m
                                      memory: 5Mi
                                      default:
                                      cpu: 100m
                                      memory: 100Mi
                                      * Apply it:
                                      oc apply -f limitrange.yaml
                                      * Verify:
                                      oc get limitrange -n darpa
                                      oc describe limitrange darpa-limits -n darpa
                                      This task validates namespace-level defaulting and constraint policies for pod scheduling and resource consumption.


                                      NEW QUESTION # 18
                                      Create a PV and PVC
                                      Task information Details:
                                      Create a PersistentVolume named landing-pv with 1Gi , ReadOnlyMany , NFS backend, and Retain reclaim policy.
                                      Create a PersistentVolumeClaim named landing-pvc requesting 1Gi , ReadOnlyMany , and storage class nfs2 .

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      * Create landing-pv.yaml:
                                      apiVersion: v1
                                      kind: PersistentVolume
                                      metadata:
                                      name: landing-pv
                                      spec:
                                      capacity:
                                      storage: 1Gi
                                      accessModes:
                                      - ReadOnlyMany
                                      nfs:
                                      path: /open001
                                      server: 192.168.2.2
                                      persistentVolumeReclaimPolicy: Retain
                                      * Apply it:
                                      oc apply -f landing-pv.yaml
                                      * Create landing-pvc.yaml:
                                      apiVersion: v1
                                      kind: PersistentVolumeClaim
                                      metadata:
                                      name: landing-pvc
                                      spec:
                                      accessModes:
                                      - ReadOnlyMany
                                      resources:
                                      requests:
                                      storage: 1Gi
                                      storageClassName: nfs2
                                      * Apply it:
                                      oc apply -f landing-pvc.yaml
                                      * Verify:
                                      oc get pv
                                      oc get pvc
                                      oc describe pv landing-pv
                                      oc describe pvc landing-pvc
                                      This task validates persistent storage provisioning and claim binding concepts.


                                      NEW QUESTION # 19
                                      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 # 20
                                      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 # 21
                                      Configure groups
                                      Configure your OpenShift cluster to meet the following requirements: The user account armstrong is a member of the commander group The user account collins is a member of the pilot group The user account aldrin is a member of the pilot group Members of the commander group have edit permission in the apollo project Members of the pilot group have view permission in the apollo project

                                      Answer:

                                      Explanation:
                                      See the solution below in Explanation.
                                      Explanation:
                                      Solution:
                                      $ oc adm groups new commander
                                      $ oc adm groups new pilot
                                      $ oc adm groups add-users commander armstrong
                                      $ oc adm groups add-users pilot collins
                                      $ oc adm groups add-users pilot aldrin
                                      $ oc adm policy add-role-to-group edit commander -n apollo
                                      $ oc adm policy add-role-to-group view pilot -n apollo


                                      NEW QUESTION # 22
                                      ......

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