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RedHat EX280 Exam Dumps

Get All Red Hat Certified OpenShift Administrator Exam Questions with Validated Answers

Exam Tags:
Vendor:	RedHat
Exam Code:	EX280
Exam Name:	Red Hat Certified OpenShift Administrator
Exam Questions:	33
Last Updated:	October 8, 2026
Related Certifications:	Red Hat Openshift Certifications

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Free RedHat EX280 Exam Actual Questions

Question No. 1

SIMULATION

Configure limits

Configure your OpenShift cluster to use limits in the bluebook project with the following requirements:

The name of the LimitRange resource is: ex280-limits

The amount of memory consumed by a single pod is between 5Mi and 300Mi The amount of memory consumed by a single container is between 5Mi and

300Mi with a default request value of 100Mi

The amount of CPU consumed by a single pod is between 10m and 500m

The amount of CPU consumed by a single container is between 10m and 500m with a default request value of 100m

ASee the solution below in Explanation

Show Answer

Correct Answer: A

Solution:

$ vim limit.yaml

# Edit the yaml file like below mentioned

apiVersion: 'v1' kind: 'LimitRange' metadata:

name: 'resource-limits' spec:

limits:

- type: 'Pod'

max:

cpu: '500m' memory: '300Mi'

min:

cpu: '10m' memory: '5Mi'

- type: 'Container' max:

cpu: '500m' memory: '300Mi'

min:

cpu: '10m' memory: '5Mi'

defaultRequest: cpu: '100m' memory: '100Mi'

$ oc create -f limit.yaml --save-config -n bluebook

$ oc describe limitranges -n bluebook

Question No. 2

SIMULATION

Task 12

Deploy Application in the Project QED

Task information Details:

Set the service account for the specified deployment in project qed to project1-sa.

ASee the solution below in Explanation

Show Answer

Correct Answer: A

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.

Question No. 3

SIMULATION

Task 16

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.

ASee the solution below in Explanation

Show Answer

Correct Answer: A

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.

Question No. 4

SIMULATION

Configure a secure route

Configure the oxcart application in the area51 project with the following requirements:

The application uses a route called oxcart

The application uses a CA signed certificate with the following subject fields:

/C=US/ST=NV/L=Hiko/O=CIA/OU=USAF/CN=classified.apps.domainxx.example.com The application is reachable only at the following address: https://classified.apps.domainxx.example.com

The application produces output

A utility script called newcert has been provided to create the CA signed certificate. You may enter the certificate parameters manually or pass the subject as a parameter.

Your certificate signing request will be uploaded to the CA where it will immediately be signed and then downloaded to your current directory.

ASee the solution below in Explanation

Show Answer

Correct Answer: A

Solution:

$ oc project area51

$ oc get pods

$ oc get all | grep deployment

$ oc get route

$ oc delete route oxcart

$ openssl genrsa -out ex280.key 2048

$ openssl req -new -key ex280.key -out ex280.csr -subj '/C=US/ST=NV/L=Hiko/O=CIA/OU=USAF/CN=classified.apps.domainxx.example.com'

$ openssl x509 -req -in ex280.csr -signkey ex280.key -out ex280.crt

$ oc create route edge oxcart --service oxcart --key ex280.key --cert ex280.crt --hostname classified.apps.domainxx.example.com

$ oc get route

$ oc get svc

Question No. 5

SIMULATION

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

ASee the solution below in Explanation

Show Answer

Correct Answer: A

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

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