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RedHat EX280 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: 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 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%	- 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 5: 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

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RedHat Red Hat Certified Specialist in OpenShift Administration exam Sample Questions (Q21-Q26):

NEW QUESTION # 21
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 # 22
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 # 23
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 # 24
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 # 25
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 # 26
......

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