EX280 Online Dumps Boost Your Career

The EX280 Red Hat Certified OpenShift Administrator exam certification exam is challenging, and it's natural to feel anxious and nervous before taking the exam. Practicing with EX280 dumps questions can help alleviate this anxiety by boosting your confidence. As you practice and become more familiar with the exam format and content, you'll feel more confident in your abilities, which can help you perform better on the actual EX280 exam. Practicing with EX280 questions can increase your chances of success in the certification exam. Practice free RedHat EX280 exam dumps below.

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1. Troubleshoot a Deployment rollout stuck due to a failing readiness probe. Resolve the issue and ensure the rollout completes successfully.

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2. Perform a rollback for a failed deployment and validate the application’s recovery.

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3. Create a new role with custom permissions for managing ConfigMaps. Validate the role’s functionality.

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4. Install the Cert Manager Operator from the OperatorHub using the OpenShift web console. Validate the installation.

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5. Configure a dual-stack service to support IPv4 and IPv6 traffic. Validate dual-stack communication.

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6. Deploy an application using Kustomize to overlay environment-specific configurations, including labels and resource limits. Validate the deployment.

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7. Create a new group and add multiple users to it. Validate the group membership.

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8. Set up a project quota to restrict the number of ConfigMaps. Validate enforcement by creating ConfigMaps beyond the limit.

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9. Configure a Deployment with resource requests and limits to prioritize workloads under node pressure.

Validate resource allocation.

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10. Troubleshoot an issue where an external route fails to resolve in DNS. Resolve the issue and validate the DNS resolution.

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11. Create a PersistentVolume and PersistentVolumeClaim for file storage. Validate that the storage is dynamically bound to a pod.

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12. Deploy an application using an OpenShift Operator and verify its functionality.

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13. Configure the networking components in OpenShift by setting up DNS for internal services and external routing. Validate connectivity between internal services and external users.

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14. Deploy a Kubernetes Deployment that uses a Secret to store sensitive information like database credentials. Validate that the application uses the Secret.

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15. Use OpenShift monitoring to set up alerts for node disk usage exceeding 90%. Include steps to configure Prometheus rules and validate alert functionality.

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16. Simulate a failed build due to insufficient resources and resolve it by updating the ResourceQuota.

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17. Use a secret for database credentials and inject it into an environment variable of a deployment. Validate the credentials.

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18. Migrate all resources from one namespace to another. Include steps to export, modify, and reapply the configurations.

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19. Create a service account and restrict it to perform only read operations on pods in its namespace.

Validate the access control.

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20. Use Kubernetes Metrics Server to monitor resource usage of pods and validate that HPA reacts to increased CPU usage.

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21. Run an application that requires privileged access to the host network. Validate the deployment.

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22. Create a Secret to store SSL certificates. Mount it in a pod and validate the certificates’ presence.

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23. Grant a group permission to manage all resources within a specific namespace. Validate their access.

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24. Configure OpenShift metrics monitoring to display custom metrics for a specific application. Include steps to expose metrics using a Prometheus exporter and validate their availability.

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25. Configure an admin user with permissions to manage roles and bindings for a specific namespace.

Validate their administrative access.

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26. Implement sticky sessions for an application to ensure requests from a user are routed to the same backend pod. Validate session stickiness.

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27. Configure a liveness probe for an application to restart the pod if it becomes unresponsive. Validate the liveness probe's behavior.

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28. Allow an application to access Kubernetes APIs using a service account. Validate the access.

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29. Diagnose and fix an issue where a Deployment fails due to exceeding the configured ResourceQuota.

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30. Configure a StatefulSet to deploy a MySQL database with persistent storage. Include steps to define the StatefulSet, create a PersistentVolume (PV) and PersistentVolumeClaim (PVC), and verify the database is running correctly.

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31. Configure an application to use a ConfigMap and Secret together, mounted as files in a single directory.

Validate their contents inside the pod.

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32. Audit all changes made to the resources in a namespace over the past day. Enable audit logging and provide commands to analyze logs for specific events.

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33. Manually schedule a pod on a specific node in the cluster by using a nodeSelector. Create a pod definition YAML and demonstrate how to verify that the pod is running on the desired node.

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34. Deploy a one-time Job to print a message. Validate its completion.

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35. Create a StatefulSet for a Redis cluster with non-shared persistent storage for each node. Validate data persistence after node restarts.

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36. Use OpenShift CLI to enable and configure monitoring alerts for persistent volume usage exceeding 80%. Provide steps to test the alert functionality.

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37. Create a security context constraint (SCC) to restrict pods from running as root. Validate by deploying a pod that violates the rule.

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38. Configure a network policy to allow only specific ports for ingress traffic to a pod. Validate the restricted access.

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39. Create a CronJob to archive old logs and store them in a mounted PVC. Validate the archived logs.

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40. Create a CronJob to clean up old logs in a specific directory every day. Validate the CronJob.

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41. Deploy a rolling update for an application to introduce a new version while maintaining availability.

Validate the rollout.

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42. Deploy a Job that runs a database migration script. Validate its execution and logs.

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43. Troubleshoot an issue where pods are not starting due to missing NodePorts in a Service configuration.

Fix the Service and validate pod communication.

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44. Secure an ingress controller with a custom CA certificate to enable encrypted communication. Validate the setup.

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45. Create a secret for TLS certificates and use it in a pod. Validate the TLS configuration.

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46. Your team requires an application to load specific configuration data dynamically during runtime. Create a ConfigMap to hold key-value pairs for application settings, and update an existing Deployment to use this ConfigMap. Provide a complete YAML definition for both the ConfigMap and the updated Deployment, and demonstrate how to validate that the configuration is applied correctly.

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47. Use OpenShift CLI to configure and test a Service Account with limited permissions. Create a Role for accessing ConfigMaps, bind it to the Service Account, and validate the access.

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48. Configure OpenShift to automatically clean up completed Jobs after a specific time. Include steps to modify the TTL for finished Jobs and verify its functionality.

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49. Deploy an Operator to automate the deployment of a Redis database. Validate that the database is running.

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50. Configure OpenShift to enforce image pull policies that always pull the latest image version when creating or restarting a pod. Validate the configuration by deploying a pod.

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51. Provision block-based storage with a specific StorageClass. Validate the PVC is dynamically provisioned and attached to a pod.

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52. Create a namespace-specific role binding for a group and validate their scoped access.

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53. Set up an application with both resource quotas and a LimitRange to enforce container-specific limits in a namespace. Validate enforcement.

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54. Remove a user from a group and validate their removal.

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55. Set up a StatefulSet for a Redis cluster and validate data persistence after a pod restart.

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56. Set up a multi-stage pipeline using BuildConfig and ImageStreams to build and deploy an application.

Validate the pipeline.

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57. Configure a network policy to allow egress traffic only to a specific external IP range. Validate the egress restriction.

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58. Run a privileged CronJob to scan the host filesystem for specific patterns. Validate the job execution.

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59. Run a privileged pod to debug network connectivity issues. Validate privileged access.

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60. Update an existing Deployment to add a readiness probe. Validate that the readiness probe works correctly.

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61. Identify and validate an image using both its tag and digest.

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62. Configure OpenShift to restrict ingress traffic to a specific namespace using Network Policies. Include steps to create a policy that allows traffic only from a specific pod in another namespace.

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63. Update an existing network policy to allow egress traffic from specific pods to external services.

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64. Create a ConfigMap with multiple configuration keys. Inject them as individual environment variables into a pod. Validate their presence.

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65. Use a secret to mount sensitive data as a file in a container. Validate the mounted file’s content.

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66. Create a service account for a specific namespace and validate its creation.

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67. Perform a rolling restart of all pods in a deployment to update configurations without downtime. Provide commands and verify that the restart was successful.

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68. Deploy a Helm chart using custom values for CPU and memory limits. Validate the configuration.

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69. Configure a namespace-wide network policy to deny all ingress traffic by default and allow only specific pod traffic. Validate the policy.

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70. Create a pod with multiple containers, where one container writes to a shared volume, and the other reads from it. Validate the interaction.

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71. Configure a resource quota to restrict the total number of PVCs in a namespace. Validate by attempting to exceed the quota.

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72. Deploy an application that uses a Secret to store database credentials. Create the Secret and demonstrate how to inject it into the application.

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73. Deploy an application with node affinity to ensure pods run on specific nodes. Validate scheduling behavior.

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74. Deploy a DaemonSet to ensure every node runs a monitoring agent. Validate that a pod is created on each node.

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75. Configure a resource quota to enforce memory limits for all pods in a namespace. Validate by exceeding the limit.

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76. Configure an ingress resource for HTTPS traffic with a custom certificate.

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77. Create a project template to include default secrets for credentials or sensitive data. Validate by creating a project and checking the secrets.

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78. Deploy a Kubernetes Deployment with a readiness probe to ensure traffic is only sent to healthy pods.

Validate the readiness behavior.

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79. Configure a DeploymentConfig to trigger a rollback on readiness probe failure. Validate rollback behavior.

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80. Implement an ImageStream policy that disables automatic image updates. Validate the manual update process.

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81. Audit and remove stale users and groups from the cluster. Validate the cleanup process.

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82. Inspect all events in the cluster and filter for warnings related to pods. Provide commands to gather and analyze the data.

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83. Assign cluster-admin permissions to a service account. Validate the permissions.

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84. Install the Prometheus Operator using the OpenShift CLI. Validate the operator's status.

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85. Roll back to a specific deployment revision and validate the rollback.

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86. Use OpenShift CLI to monitor cluster health and identify nodes under pressure. Provide steps to analyze and resolve any resource contention issues.

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87. Install the Knative Serving Operator to manage serverless applications. Validate its installation.

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88. List all users and groups in the cluster.

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89. Set up a network policy to allow ingress traffic from pods in a specific namespace only. Validate the restricted access.

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90. Manually update an application by tagging a new image in an ImageStream. Validate the deployment.

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91. Configure a DeploymentConfig to trigger a deployment when a new image is pushed to the ImageStream. Validate the trigger behavior.

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92. Create a project template to automatically include a ConfigMap and a Service when a project is created.

Validate the creation of resources.

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93. Configure a rate-limiting ingress policy for a service to limit traffic volume. Validate the rate limiting.

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94. Configure a Horizontal Pod Autoscaler (HPA) for an application that scales based on custom metrics using Prometheus. Validate the custom metrics scaling behavior.

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95. Restrict internal pod-to-pod traffic to pods within the same namespace. Validate the restriction.

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96. Configure an application with a ConfigMap and a Secret, injecting both as environment variables.

Validate their accessibility.

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97. Configure and test application network policies to restrict communication between pods in OpenShift.

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