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The EX280 exam is a hands-on, performance-based exam that requires candidates to perform a series of tasks related to OpenShift Administration. EX280 exam is designed to test skills such as installing and configuring OpenShift, creating and managing applications, configuring and managing storage, and troubleshooting common issues. EX280 exam is conducted in a lab environment using Red Hat OpenShift Container Platform and is four hours long.
The RedHat EX280 Exam consists of performance-based tasks that assess OpenShift's core competencies required by the candidates. These tasks are designed to be practical in nature and reflect real-world scenarios that a RedHat EX280 professional may encounter while working with OpenShift. EX280 exam encompasses several areas of OpenShift Administration, including installation, configuration, maintenance, and troubleshooting.
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The RedHat EX280 Exam topics are bellow:
Configure networking components
Manage users and policies
Manage OpenShift Container Platform
Configure pod scheduling
Control access to resources
NEW QUESTION # 11
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
Answer:
Explanation:
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
NEW QUESTION # 12
Install Helm Chart
Task information Details:
Add the Helm repository do280-repo and install the example-app release from the specified chart.
Answer:
Explanation:
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.
NEW QUESTION # 13
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 # 14
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 # 15
Create Network Policy
Task information Details:
Create a NetworkPolicy named mysql-db-conn that permits ingress to database pods only from pods matching the specified labels in namespaces labeled team=devsecops , on TCP port 3306 .
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Create a file named mysql-db-conn.yaml:
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: mysql-db-conn
spec:
podSelector:
matchLabels:
networking.k8s.io/v1/network: database
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
team: devsecops
podSelector:
matchLabels:
deployment: my-web-mysql
ports:
- protocol: TCP
port: 3306
* Apply it:
oc apply -f mysql-db-conn.yaml
* Verify:
oc get networkpolicy
oc describe networkpolicy mysql-db-conn
This task tests namespace/pod label selection and application isolation using OpenShift networking policy controls.
NEW QUESTION # 16
......
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