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RedHat EX280 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Deploy and Manage Applications	25%	- Manage application lifecycles 1. Update and rollback deployments 2. Manage replica sets and scaling - Deploy applications from multiple sources 1. Use Kustomize and overlays 2. Use YAML manifests, templates and Helm charts
Topic 2: Configure Networking and Access	15%	- Expose services externally 1. Control ingress and network policies 2. Create and manage routes - Troubleshoot software-defined networking
Topic 3: Manage OpenShift Container Platform	20%	- Work with container images 1. Locate, identify and examine images 2. Manage image streams and registries - Manage and configure clusters via web console and CLI 1. Examine cluster status and resources 2. Monitor events, alerts and logs 3. Create and delete projects
Topic 4: Manage Authentication and Authorization	15%	- Configure identity providers 1. Set up HTPasswd and other providers - Manage users, groups and permissions 1. Create/delete users and modify passwords 2. Assign roles and adjust access rights
Topic 5: Work with Kubernetes Resources	25%	- Manage configuration data 1. Create and use ConfigMaps 2. Create and use Secrets - Query, filter and modify resource attributes 1. Import/export and configure manifests 2. Use labels, selectors and annotations

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RedHat Red Hat Certified Specialist in OpenShift Administration exam Sample Questions (Q18-Q23):

NEW QUESTION # 18
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 # 19
Autoscale of Pods
Task information Details:
Create an HPA for httpd with min=2 , max=9 , and CPU target 60% .
Set resource requests on the httpd deployment so autoscaling can function properly.

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Set resource requests on the deployment:
oc set resources deployment httpd --requests=cpu=50m,memory=100Mi
* Create the HPA:
oc autoscale deployment httpd --min=2 --max=9 --cpu-percent=60
* Verify:
oc get hpa
oc describe hpa httpd
oc get deployment httpd -o yaml
Why resource requests matter:
* HPA CPU utilization is calculated against requested CPU.
* Without requests, percentage-based autoscaling is incomplete or invalid.
This task focuses on autoscaling prerequisites and policy creation.

NEW QUESTION # 20
Deploy an application
Deploy the application called rocky in the bullwinkle project so that the following conditions are true:
The
application is reachable at the following address: http://rocky.apps.domainXX.example.com The application produces output

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
$ oc project bullwinkle
$ oc get pods
$ oc get all | grep deploy
$ oc get nodes
$ oc describe nodes | grep -i taint
$ oc adm taint nodes worker0 key1=value1:NoSchedule-
$ oc adm taint nodes worker1 key1=value1:NoSchedule-
$ oc describe nodes | grep -i taint
$ oc get route
$ oc delete route rocky
$ oc expose svc rocky --hostname rocky.apps.domainxx.example.com
$ oc get route

NEW QUESTION # 21
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 # 22
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 # 23
......

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