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| Certification Vendor: | Red Hat |
|---|---|
| Exam Name: | Red Hat Certified Specialist in OpenShift Administration Exam (EX280) |
| Exam Number: | EX280 |
| Available Languages: | English |
| Passing Score: | 210/300 |
| Exam Duration: | 150 minutes |
| Certificate Validity Period: | 3 years |
| Exam Price: | USD 400 (varies by region) |
| Exam Format: | Performance-based lab exam |
| Related Certifications: | Red Hat Certified System Administrator (RHCSA) Red Hat Certified Engineer (RHCE) Red Hat Certified Specialist in Containers and Kubernetes |
| Real Exam Qty: | Performance-based (no fixed number of questions) |
| Recommended Training: | DO280 - Red Hat OpenShift Administration II: Operating a Production Kubernetes Cluster DO180 - Introduction to Kubernetes and OpenShift |
| Exam Registration: | EX280 Exam Page Red Hat Certification Catalog |
| Sample Questions: | RedHat EX280 Sample Questions |
| Exam Way: | Online or onsite performance-based exam in a live OpenShift environment |
| Pre Condition: | Recommended experience with Linux administration and Kubernetes/OpenShift fundamentals (RHCSA or equivalent knowledge recommended) |
| Official Syllabus URL: | https://www.redhat.com/en/services/certification/ex280-red-hat-certified-specialist-openshift-administration |
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RedHat EX280 exam is a professional certification for open-source enterprise-grade container orchestration platform OpenShift. Red Hat Certified Specialist in OpenShift Administration exam certification is designed for system administrators who want to validate their ability to install, configure, and manage an OpenShift cluster. Being a certified RedHat EX280 professional is not only a sign of expertise but also indicates that the professional is up-to-date with current OpenShift best practices and techniques.
NEW QUESTION # 20
Managing Group
Task information Details:
Create the groups site-users and guest-users .
Add qwerty to guest-users .
Add harry and susan to site-users .
Grant edit to site-users on test .
Grant view to guest-users on demo .
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Create the groups:
oc adm groups new site-users
oc adm groups new guest-users
* Add users to groups:
oc adm groups add-users guest-users qwerty
oc adm groups add-users site-users harry susan
* Grant edit role on test to site-users:
oc policy add-role-to-group edit site-users -n test
* Grant view role on demo to guest-users:
oc policy add-role-to-group view guest-users -n demo
* Verify:
oc get groups
oc describe group site-users
oc describe group guest-users
oc get rolebinding -n test
oc get rolebinding -n demo
This task measures practical administration of OpenShift groups and project-scoped RBAC assignments.
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
Create Service Account in QED
Task information Details:
Switch to project qed .
Create service account project1-sa .
Grant the anyuid SCC to that service account.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Switch to the project:
oc project qed
* Create the service account:
oc create serviceaccount project1-sa -n qed
* Grant the SCC:
oc adm policy add-scc-to-user anyuid -z project1-sa -n qed
* Verify:
oc get sa project1-sa -n qed
oc adm policy who-can use scc anyuid
Why this matters:
* anyuid allows containers to run with arbitrary user IDs when an application requires it.
* This is a common administrative task in OpenShift for third-party container images.
This task validates service account creation and SCC assignment.
NEW QUESTION # 23
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 # 24
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 # 25
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