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RedHat EX280 Exam Syllabus Topics:

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

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RedHat Red Hat Certified Specialist in OpenShift Administration exam Sample Questions (Q29-Q34):

NEW QUESTION # 29
Create LimitRanges for Project Darpa
Task information Details:
Switch to project darpa and create a LimitRange with Pod and Container minimums and maximums of CPU and memory, plus default container values.

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Switch to the target project:
oc project darpa
* Create a YAML file, for example limitrange.yaml:
apiVersion: v1
kind: LimitRange
metadata:
name: darpa-limits
namespace: darpa
spec:
limits:
- type: Pod
max:
cpu: 300m
memory: 300Mi
min:
cpu: 5m
memory: 5Mi
- type: Container
max:
cpu: 300m
memory: 300Mi
min:
cpu: 5m
memory: 5Mi
default:
cpu: 100m
memory: 100Mi
* Apply it:
oc apply -f limitrange.yaml
* Verify:
oc get limitrange -n darpa
oc describe limitrange darpa-limits -n darpa
This task validates namespace-level defaulting and constraint policies for pod scheduling and resource consumption.

NEW QUESTION # 30
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 # 31
Configure an application to use a secret
Configure the application called qed in the math project with the following requirements:
The application uses the secret previously created called: magic The secret defines an environment variable with name: DECODER_RING The application output no longer displays: Sorry, application is not configured correctly.

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
$ oc get all | grep deploy
$ oc set env --from=secret/magic deployment.apps/qed

NEW QUESTION # 32
Scale an application manually
Manually scale the minion application in the gru project to a total of 5 replicas.

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
$ oc project gru
$ oc get pods
$ oc get all | grep deployment
$ oc scale --replicas=5 deployment.apps/minion
$ oc get pods

NEW QUESTION # 33
Configure project permissions
Configure your OpenShift cluster to meet the following requirements: The following projects exist:
apollo manhattan gemini bluebook titan
The user account armstrong is an administrator for project apollo and project gemini The user account wozniak can view project titan but not administer or delete it

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
$ oc new-project apollo
$ oc new-project manhattan
$ oc new-project gemini
$ oc new-project bluebook
$ oc new-project titan
$ oc adm policy add-role-to-user admin armstrong -n apollo
$ oc adm policy add-role-to-user admin armstrong -n gemini
$ oc adm policy add-role-to-user view wozniak -n titan

NEW QUESTION # 34
......

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