RedHat EX280 Test Valid, Exam EX280 Simulator Free

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RedHat EX280 Exam Syllabus Topics:

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

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RedHat Red Hat Certified Specialist in OpenShift Administration exam Sample Questions (Q12-Q17):

NEW QUESTION # 12
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 # 13
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 # 14
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 # 15
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 # 16
Scale an application automatically
Automatically scale the hydra application deployment configuration in the lerna project with the following requirements:
Minimum number of replicas: 6 Maximum number of replicas: 9
Target average CPU utilization: 60 percent Container CPU resource request: 25m Container CPU resource limit: 100m

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
$ oc project lerna
$ oc get pods
$ oc get all | grep deployment
$ oc autoscale deployment.apps/hydra --max=9 --min=6 --cpu-percent=60
$ oc get hpa
$ oc set resources deployment.apps/hydra --limits=cpu=100m -- requests=cpu=25m
$ oc describe deployment.apps/hydra | grep Limits -A3

NEW QUESTION # 17
......

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