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| Certification Vendor: | Red Hat |
|---|---|
| Exam Name: | Red Hat Certified Specialist in OpenShift Administration exam |
| Exam Number: | EX280 |
| Related Certifications: | Red Hat Certified Architect (RHCA) Red Hat Certified Specialist in OpenShift Application Development |
| Certificate Validity Period: | 3 years |
| Real Exam Qty: | not publicly disclosed (performance-based hands-on lab) |
| Passing Score: | not publicly disclosed |
| Exam Format: | No multiple choice questions, Performance-based hands-on lab, Command-line interface |
| Available Languages: | Japanese, Chinese, English |
| Exam Price: | USD 400 |
| Exam Duration: | 180 minutes |
| Sample Questions: | RedHat EX280 Sample Questions |
| Exam Way: | In-person at Red Hat testing centers or online proctored exam |
| Pre Condition: | Recommended: Red Hat OpenShift Administration I (DO280) course or equivalent experience with containers, Kubernetes, and OpenShift |
| Official Syllabus URL: | https://www.redhat.com/en/services/certification/ex280 |
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The EX280 certification exam is an excellent way for IT professionals to validate their skills in OpenShift administration. EX280 exam is designed to be challenging, and it requires a deep understanding of the various components of OpenShift, including the use of Kubernetes, Docker, and other container technologies. EX280 exam is also designed to test the ability to troubleshoot issues that may arise in OpenShift clusters, ensuring that IT professionals have the ability to resolve problems quickly and efficiently.
RedHat EX280 (Red Hat Certified Specialist in OpenShift Administration) exam is designed to test your knowledge and skills in OpenShift administration. OpenShift is a container application platform that enables developers to build, deploy, and manage containerized applications. OpenShift is built on top of Kubernetes and provides a wide range of tools and services to simplify the deployment and management of containerized applications.
NEW QUESTION # 27
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 # 28
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 # 29
Create a CronJob test-cron
Task information Details:
Create service account jupiter .
Grant anyuid SCC and cluster- admin to it.
Update CronJob cron-test to use that service account.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Switch to the project hosting the cronjob, if needed:
oc project cron-test
* Create the service account:
oc create sa jupiter
* Grant anyuid:
oc adm policy add-scc-to-user anyuid -z jupiter -n cron-test
* Grant cluster-admin:
oc adm policy add-cluster-role-to-user cluster-admin system:serviceaccount:cron-test:jupiter
* Update the cronjob:
oc patch cronjob cron-test -p '{"spec":{"jobTemplate":{"spec":{"template":{"spec":{"serviceAccountName":" jupiter"}}}}}}'
* Verify:
oc get cronjob cron-test -o yaml | grep serviceAccountName
Notes:
* The uploaded lab uses oc set sa cronjob.batch/cron-test jupiter, which is not the usual command form for CronJobs. Patching the pod template is the reliable method.
This task checks service account and privilege adjustments for scheduled workloads.
NEW QUESTION # 30
Autoscale of Pods
Task information Details:
Create an HPA for httpd with min=2 , max=9 , and CPU target 60% .
Set resource requests on the httpd deployment so autoscaling can function properly.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Set resource requests on the deployment:
oc set resources deployment httpd --requests=cpu=50m,memory=100Mi
* Create the HPA:
oc autoscale deployment httpd --min=2 --max=9 --cpu-percent=60
* Verify:
oc get hpa
oc describe hpa httpd
oc get deployment httpd -o yaml
Why resource requests matter:
* HPA CPU utilization is calculated against requested CPU.
* Without requests, percentage-based autoscaling is incomplete or invalid.
This task focuses on autoscaling prerequisites and policy creation.
NEW QUESTION # 31
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 # 32
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