EX380 Musterprüfungsfragen - EX380Zertifizierung & EX380Testfagen

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RedHat EX380 Prüfungsplan:

ThemaEinzelheiten
Thema 1
  • Provision and inspect cluster logging: Covers deploying and configuring OpenShift logging with Vector and Loki, forwarding logs externally, querying logs, and diagnosing logging issues.
Thema 2
  • Back up and restore applications with OpenShift API for Data Protection (OADP): Covers deploying OADP, performing full application backups including data and resources, using volume snapshots, and scheduling and restoring backups.
Thema 3
  • Implement OpenShift GitOps: Covers deploying and configuring Argo CD with the GitOps operator to manage both cluster administration and application delivery through Git-based pipelines and integrations.

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EX380 Zertifizierungsfragen, EX380 Exam Fragen

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RedHat Red Hat Certified Specialist in OpenShift Automation and Integration EX380 Prüfungsfragen mit Lösungen (Q39-Q44):

39. Frage
Silence an alert in Alertmanager
Task Information : Create an Alertmanager silence for a noisy alert for 2 hours, then confirm it's silenced.

Antwort:

Begründung:
See the solution below in Explanation:
Explanation:
* Find the alert name and labels
* Web console: Observe # Alerts # click the alert to view label set.
* Open Alertmanager silences
* Observe # Alerting # Alertmanager # Silences # Create silence
* Explanation: Silences mute alerts matching label filters.
* Create the silence
* Add matcher: alertname = < ALERT_NAME >
* Duration: 2 hours
* Save.
* Verify the alert shows as silenced
* The alert should indicate it is silenced in the UI.


40. Frage
Backup and Restore - Fix SCC for Restored Application

Antwort:

Begründung:
See the solution below in Explanation:
Explanation:
Step 1: Identify the application namespace after restore.
The lab shows the namespace as my-app-namespace.
Step 2: Run the SCC assignment command:
oc adm policy add-scc-to-user anyuid -z default -n my-app-namespace
Step 3: Confirm the role binding is applied.
The lab output shows:
clusterrole.rbac.authorization.k8s.io/system:openshift:scc:anyuid added: "default" Detailed explanation:
After a restore, the application may fail if its pods require a security context not permitted by the default SCC allocation. This command grants the anyuid SCC to the default service account in the my-app-namespace project. The -z default syntax targets the default service account, which many restored workloads use if no custom service account is defined. The anyuid SCC allows containers to run with arbitrary user IDs, which some legacy or prebuilt images require. In OpenShift, SCC mismatches commonly cause pods to remain in pending or crash-related states. Assigning the proper SCC resolves those admission issues so workloads can start successfully. This step is therefore a post-restore operational fix to align security policy with application requirements.


41. Frage
Service Accounts and RBAC - Grant Cluster Reader Role

Antwort:

Begründung:
See the solution below in Explanation:
Explanation:
Step 1: Confirm the service account exists in auth-audit.
It must exist before a role can be assigned to it.
Step 2: Run the command:
oc adm policy add-cluster-role-to-user cluster-reader system:serviceaccount:auth-audit:audit Step 3: Verify the binding is added.
The lab output shows:
clusterrole.rbac.authorization.k8s.io/cluster-reader added: "system:serviceaccount:auth-audit:audit" Detailed explanation:
This binds the cluster-reader cluster role to the audit service account. The full subject format system:
serviceaccount:namespace:name is required because OpenShift RBAC needs the exact service account identity. The cluster-reader role is broader than a project-scoped view role because it allows read-level access across cluster resources. This is appropriate for auditing or inspection use cases where the account must observe but not modify. The distinction between cluster roles and namespaced roles is important: cluster roles apply to non-namespaced resources and broad cluster visibility, while local roles are limited to individual projects. This Task is a classic RBAC operation that combines identity creation with controlled privilege assignment.


42. Frage
Kubeconfig Management - Set Context in Kubeconfig

Antwort:

Begründung:
See the solution below in Explanation:
Explanation:
Step 1: Verify the cluster name, namespace, and user name that should be referenced.
The lab uses cluster api-ocp4-example-com:6443, namespace audit-ns, and user audit-sa.
Step 2: Run the command:
oc config set-context audit --cluster api-ocp4-example-com:6443 --namespace audit-ns --user audit-sa -- kubeconfig audit.config Step 3: Confirm context creation.
The lab output shows:
Context "audit" created.
Detailed explanation:
A kubeconfig context ties together three things: a cluster endpoint, a user identity, and optionally a default namespace. This Task creates a context named audit in the file audit.config. Contexts are useful because they simplify repeated administration by letting the user switch between prepared working environments instead of re-entering cluster and namespace details each time. The namespace portion is especially helpful for project- scoped operations, because commands run under that context default to the chosen namespace. Accuracy matters here: if the user name in the context does not match the credentials entry or the cluster name does not exist in the kubeconfig, the context will not function as intended.


43. Frage
Create a full application backup (resources + PV data)
Task Information : Create a Velero backup of namespace orders including PV snapshots.

Antwort:

Begründung:
See the solution below in Explanation:
Explanation:
* Confirm resources and PVCs exist
* oc -n orders get all
* oc -n orders get pvc
* Ensures there is something meaningful to back up.
* Create backup including volume snapshots
* velero backup create orders-full --include-namespaces orders --snapshot-volumes
* Captures Kubernetes objects and requests PV snapshots where supported.
* Check status/details
* velero backup describe orders-full --details
* velero backup logs orders-full
* Review warnings/errors and confirm snapshot actions.


44. Frage
......

Das Expertenteam von DeutschPrüfung hat neulich das effiziente kurzfriestige Schulungsprogramm zur RedHat EX380 Zertifizierungsprüfung entwickelt. Die Kandidaten sollen an dem 20-stündigen Kurs teilnehmen, dann können sie neue Kenntnisse beherrschen und ihre ursprüngliches Wissen konsolidieren und auch die RedHat EX380 Zertifizierungsprüfung leichter als diejenigen, die viel Zeit und Energie auf die Prüfung verwendet, bestehen.

EX380 Zertifizierungsfragen: https://www.deutschpruefung.com/EX380-deutsch-pruefungsfragen.html