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RedHat EX280 Exam Syllabus Topics:

Section	Weight	Objectives
Configure Networking and Access	15%	- Expose services externally 1. Create and manage routes 2. Control ingress and network policies - Troubleshoot software-defined networking
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
Manage OpenShift Container Platform	20%	- Manage and configure clusters via web console and CLI 1. Monitor events, alerts and logs 2. Create and delete projects 3. Examine cluster status and resources - Work with container images 1. Locate, identify and examine images 2. Manage image streams and registries
Deploy and Manage Applications	25%	- Deploy applications from multiple sources 1. Use Kustomize and overlays 2. Use YAML manifests, templates and Helm charts - Manage application lifecycles 1. Manage replica sets and scaling 2. Update and rollback deployments
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. Use labels, selectors and annotations 2. Import/export and configure manifests

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RedHat Red Hat Certified Specialist in OpenShift Administration exam Sample Questions (Q27-Q32):

NEW QUESTION # 27
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 # 28
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 # 29
Create Secret with Name Magic in Math Project
Task information Details:
Create a secret named magic in the math project that stores MYSQL_ROOT_PASSWORD=redhat .

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Switch to the math project:
oc project math
* Create the secret:
oc create secret generic magic --from-literal=MYSQL_ROOT_PASSWORD=redhat
* Verify:
oc get secret magic
oc describe secret magic
Note:
* The uploaded lab text contains a typo --from-listeral; the valid option is --from-literal.
* The output in the lab also appears inconsistent. The intended secret name is magic .
This task checks secret creation and secure configuration data handling.

NEW QUESTION # 30
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 # 31
Scale Application Manually
Task information Details:
Scale the httpd deployment to 5 replicas .

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Scale the deployment:
oc scale deployment httpd --replicas=5
* Verify:
oc get deployment httpd
oc get pods -l app=httpd
* Confirm the desired, current, and available replica counts match.
This task checks direct workload scaling using the OpenShift CLI.

NEW QUESTION # 32
......

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