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RedHat EX280 Exam Syllabus Topics:

Section	Objectives
Topic 1: Security and Troubleshooting	- Security management 1. Manage SCC (Security Context Constraints) 2. Configure authentication and authorization - Troubleshooting 1. Analyze logs and events 2. Diagnose cluster and application issues
Topic 2: Storage and Persistence	- Persistent storage configuration 1. Configure storage classes 2. Provision persistent volumes and claims
Topic 3: Cluster Administration	- User and role management 1. Configure users, groups, and RBAC 2. Manage cluster roles and bindings - Resource management 1. Manage projects, quotas, and limits 2. Deploy and manage applications
Topic 4: Networking and Ingress	- Cluster networking 1. Configure routes and ingress resources 2. Troubleshoot network connectivity
Topic 5: OpenShift Cluster Installation and Configuration	- Cluster setup and installation verification 1. Validate cluster health and components 2. Install OpenShift clusters using installer-provisioned infrastructure

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RedHat Red Hat Certified Specialist in OpenShift Administration exam Sample Questions (Q13-Q18):

NEW QUESTION # 13
Configure quotas
Configure your OpenShift cluster to use quotas in the manhattan project with the following requirements:
The name of the ResourceQuota resource is: ex280-quota
The amount of memory consumed across all containers may not exceed 1Gi
The total amount of CPU usage consumed across all containers may not exceed
2 full cores
The maximum number of replication controllers does not exceed 3 The maximum number of pods does not exceed 3 The maximum number of services does not exceed 6

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
$ oc project manhattan
$ oc create quota ex280-quota -- hard=memory=1Gi,cpu=2,pods=3,services=6,replicationcontrollers=3
$ oc get resourcequota

NEW QUESTION # 14
Create Secure Route in Quart Project
Task information Details:
Create an edge route named htquart for service httpd , using the specified hostname and TLS certificate/key files.

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Switch to the quart project:
oc project quart
* Create the secure route:
oc create route edge htquart \
--service=httpd \
--hostname=quart.apps.ocp4.example.com \
--cert=./req.crt \
--key=./req.key
* Verify:
oc get route htquart
oc describe route htquart
* Test resolution and access if DNS is available:
curl -k https://quart.apps.ocp4.example.com
This task checks route exposure, TLS termination, and secure ingress administration.

NEW QUESTION # 15
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 # 16
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 # 17
Collect Cluster Information
Task information Details:
Run must-gather and archive the gathered data into a tar file.

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Run must-gather:
oc adm must-gather
* Confirm the directory created, usually something like:
ls
* Archive the directory:
tar -cvzf system10-4ktjl-l4kj5l-lk45j.tar.gz must-gather.local.*
* Verify:
ls -lh *.tar.gz
Notes:
* The lab text shows a tar command without source paths. A valid tar command must include the source directory or files.
* Use the actual must-gather output directory generated in your environment.
This task validates support-data collection and cluster diagnostics handling.

NEW QUESTION # 18
......

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