Pass test with the help of EX280 actual exam materials
Last Updated: Nov 04, 2026
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The Red Hat Certified System Administrator (EX280) exam is an entry-level exam for system administrators seeking to verify their knowledge of the fundamentals of administering Linux systems.
The Red Hat Certified System Administrator (RHCSA) certification is a prerequisite for the Red Hat Certified Engineer (RHCE) certification. The RHCE certification is a prerequisite for the Red Hat Certified Architect (RHCAA) certification.
Reference: https://www.redhat.com/en/services/training/red-hat-certified-openshift-administrator-exam
The Red Hat Certified Specialist in OpenShift Administration exam is the first step toward becoming a Red Hat Certified Specialist (RHCS). The RHCS program is designed to help IT professionals demonstrate their skills and knowledge in specific technologies. RedHat EX280 exam dumps will enhance your skills. As a result, you will be able to perform your job more efficiently. As a result, you will be able to get a higher salary. The Red Hat Certified Specialist in OpenShift Administration certification is also an important part of the Red Hat Certification Program. If you want to get a job as a Red Hat consultant, then you need to be a certified Red Hat consultant.
The RHCS in OpenShift Administration exam is designed to validate the ability to configure, deploy and maintain an enterprise-grade container application platform based on Red Hat OpenShift Container Platform 3.9.
In addition to the RHCS exam, you'll need to pass one of the following exams:
Red Hat Certified Engineer (RHCE)
Red Hat Certified System Administrator (RHCSA)
| Section | Objectives |
|---|---|
| Topic 1: Storage and Persistence | - Persistent storage configuration
|
| Topic 2: Networking and Ingress | - Cluster networking
|
| Topic 3: OpenShift Cluster Installation and Configuration | - Cluster setup and installation verification
|
| Topic 4: Cluster Administration | - User and role management
|
| Topic 5: Security and Troubleshooting | - Security management
|
Install Helm Chart
Task information Details:
Add the Helm repository do280-repo and install the example-app release from the specified chart.
Correct Answer:
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.
Deploy Application in the Project QED
Task information Details:
Set the service account for the specified deployment in project qed to project1-sa .
Correct Answer:
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.
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.
Correct Answer:
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.
Configure cluster permissions
Configure your OpenShift cluster to meet the following requirements: The user account jobs can perform cluster administration tasks The user account wozniak can create projects The user account wozniak cannot perform cluster administration tasks The user account armstrong cannot create projects The user account kubeadmin is not present
Correct Answer:
See the solution below in Explanation.
Explanation:
Solution:
$ oc adm policy add-cluster-role-to-user cluster-admin jobs
$ oc adm policy remove-cluster-role-from-group self-provisioner
system:authenticated:oauth
$ oc adm policy add-cluster-role-to-user self-provisioner wozniak
$ oc delete secret kubeadmin -n kube-system
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