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| Certification Vendor: | Red Hat |
|---|---|
| Exam Name: | Red Hat Certified Specialist in OpenShift Administration Exam (EX280) |
| Exam Number: | EX280 |
| Exam Format: | Performance-based lab exam |
| Exam Duration: | 150 minutes |
| Real Exam Qty: | Performance-based (no fixed number of questions) |
| Available Languages: | English |
| Passing Score: | 210/300 |
| Related Certifications: | Red Hat Certified Engineer (RHCE) Red Hat Certified System Administrator (RHCSA) Red Hat Certified Specialist in Containers and Kubernetes |
| Certificate Validity Period: | 3 years |
| Exam Price: | USD 400 (varies by region) |
| Recommended Training: | DO180 - Introduction to Kubernetes and OpenShift DO280 - Red Hat OpenShift Administration II: Operating a Production Kubernetes Cluster |
| Exam Registration: | Red Hat Certification Catalog EX280 Exam Page |
| 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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The EX280 exam tests the candidate's knowledge and skills in a wide range of OpenShift administration topics, including application deployment, scaling, and troubleshooting. EX280 exam is designed to evaluate the candidate's ability to work with OpenShift clusters, configure and manage users and groups, and set up networking and storage solutions. EX280 Exam also tests the candidate's skills in securing OpenShift clusters and implementing container security.
NEW QUESTION # 32
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 # 33
Manage Cluster Project and Permission
Task information Details:
Create projects apollo , test , and demo .
Grant bob the cluster-admin role.
Prevent ordinary authenticated users from self-provisioning projects.
Allow john to create projects.
Give natasha view-only access to test and apollo .
Give armstrong admin access to apollo .
Remove the kubeadmin user secret.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Create the projects:
oc new-project apollo
oc new-project test
oc new-project demo
* Grant cluster-admin to bob:
oc adm policy add-cluster-role-to-user cluster-admin bob
* Disable normal self-provisioning for authenticated users:
oc adm policy remove-cluster-role-from-group self-provisioner system:authenticated:oauth
* Allow john to self-provision:
oc adm policy add-cluster-role-to-user self-provisioner john
* Give natasha view access in test and apollo:
oc policy add-role-to-user view natasha -n test
oc policy add-role-to-user view natasha -n apollo
* Give armstrong admin in apollo:
oc policy add-role-to-user admin armstrong -n apollo
* Remove kubeadmin secret:
oc delete secret kubeadmin -n kube-system
* Verify permissions:
oc adm policy who-can create projectrequests
oc describe rolebinding.rbac -n apollo
oc describe rolebinding.rbac -n test
This task tests core OpenShift administration around project lifecycle control, cluster-level RBAC, and decommissioning default bootstrap credentials.
NEW QUESTION # 34
Start a Probe in Project Start
Task information Details:
Add a Liveness Probe to the deployment in project start using the Web Console.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Open the Web Console.
* Switch to project start .
* Navigate to: Workloads # Deployments
* Select the target deployment.
* Click the action menu and choose: Add Health Checks
* Select Liveness Probe .
* Configure the appropriate probe type:
* HTTP
* TCP
* or Command
* Enter the required endpoint or command based on the application.
* Save the configuration.
* Verify the deployment updates successfully and the pod status remains healthy.
CLI alternative if needed:
oc set probe deployment/ < deployment-name >
--liveness --get-url=http://:8080/ --initial-delay-seconds=10
This task measures health-check configuration for workload self-recovery.
NEW QUESTION # 35
Use Secret in Monday Project
Task information Details:
Use the secret created earlier as environment variables in deployment monday .
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Switch to the correct project if needed:
oc project monday
* Inject environment variables from the secret:
oc set env deployment/monday --from=secret/magic
* Verify:
oc set env deployment/monday --list
oc describe deployment monday
Notes:
* The uploaded lab references secret/file-secret, but Task 8 clearly intends the secret to be named magic .
* In a real exam, match the actual secret name present in the cluster.
This task tests secret consumption by workloads through environment variable injection.
NEW QUESTION # 36
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
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
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
NEW QUESTION # 37
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EX280 Interactive Questions: https://www.test4engine.com/EX280_exam-latest-braindumps.html