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RedHat EX280 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: 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 2: Configure Networking and Access	15%	- Troubleshoot software-defined networking - Expose services externally 1. Create and manage routes 2. Control ingress and network policies
Topic 3: 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 4: Manage OpenShift Container Platform	20%	- Work with container images 1. Manage image streams and registries 2. Locate, identify and examine images - Manage and configure clusters via web console and CLI 1. Create and delete projects 2. Monitor events, alerts and logs 3. Examine cluster status and resources
Topic 5: Work with Kubernetes Resources	25%	- Query, filter and modify resource attributes 1. Import/export and configure manifests 2. Use labels, selectors and annotations - Manage configuration data 1. Create and use Secrets 2. Create and use ConfigMaps

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RedHat Red Hat Certified Specialist in OpenShift Administration exam Sample Questions (Q26-Q31):

NEW QUESTION # 26
Configure a service account
Configure a service account in the apples project to meet the following requirements:
The name of the account is ex280sa
The account allows pods to be run as any available user

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
$ oc project apples
$ oc create sa ex280sa
$ oc adm policy add-scc-to-user anyuid -z ex280sa

NEW QUESTION # 27
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 # 28
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 # 29
Create Network Policy
Task information Details:
Create a NetworkPolicy named mysql-db-conn that permits ingress to database pods only from pods matching the specified labels in namespaces labeled team=devsecops , on TCP port 3306 .

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Create a file named mysql-db-conn.yaml:
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: mysql-db-conn
spec:
podSelector:
matchLabels:
networking.k8s.io/v1/network: database
policyTypes:
- Ingress
ingress:
- from:
- namespaceSelector:
matchLabels:
team: devsecops
podSelector:
matchLabels:
deployment: my-web-mysql
ports:
- protocol: TCP
port: 3306
* Apply it:
oc apply -f mysql-db-conn.yaml
* Verify:
oc get networkpolicy
oc describe networkpolicy mysql-db-conn
This task tests namespace/pod label selection and application isolation using OpenShift networking policy controls.

NEW QUESTION # 30
Deploy an application
Deploy the application called oranges in the apples project so that the following conditions are true:
The application uses the ex280sa service account
No additional configuration components have been added or removed The application produces output

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
$ oc project mercury
$ oc get pods
$ oc get all | grep deploy
$ oc describe deployment.apps/atlas | grep -L memory
$ oc set resources deployment.apps/atlas --resources=memory=80Mi

NEW QUESTION # 31
......

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