50 IBM Cloud Pak for Data v4.x Upgrade Practice Questions: Question Bank 2025

During an IBM Cloud Pak for Data upgrade planning workshop, an administrator wants to identify which platform and service components will be impacted and whether prerequisites (cluster resources, operators, storage classes) are met. Which approach is MOST appropriate to reduce upgrade risk?

An organization must ensure the Cloud Pak for Data upgrade can be rolled back from a logical perspective (ability to recover the environment if the upgrade fails). Which action is the BEST practice before starting the upgrade?

After upgrading the Cloud Pak for Data platform operators, the administrator notices that some service operators remain on older channels. What is the MOST appropriate next step to align services with the upgraded platform while minimizing disruption?

A team is preparing for an upgrade and wants to minimize downtime. They ask which type of workloads in Cloud Pak for Data are MOST likely to require a planned outage during upgrade execution.

Post-upgrade, users report they can access the Cloud Pak for Data console but cannot start a service because the service pods remain in Pending state. The cluster shows sufficient CPU/memory, but pods indicate volume binding issues. What is the MOST likely cause?

During a disconnected (air-gapped) upgrade, the installer reports image pull failures from the internal registry. Which validation is MOST effective to perform FIRST?

A customer wants to migrate analytics projects and associated assets from an older Cloud Pak for Data environment to a newly upgraded environment. Which approach BEST supports controlled migration with traceability and minimal manual rework?

After an upgrade, the platform is stable but performance for interactive workloads is degraded. The admin observes frequent pod rescheduling and CPU throttling on worker nodes running Cloud Pak for Data services. What is the BEST optimization action?

An upgrade attempt fails because multiple operators controlling Cloud Pak for Data components are stuck in an install/upgrade loop. The administrator suspects operator dependency conflicts. Which action is MOST appropriate to diagnose and resolve this issue?

A regulated customer requires an upgrade design that preserves encryption controls for data at rest and in transit while moving from the old environment to a new upgraded cluster. Which architecture decision BEST supports this requirement during migration?

During upgrade planning, an administrator needs to confirm that the Red Hat OpenShift cluster can support the Cloud Pak for Data control plane and multiple services without resource contention. What is the BEST approach to assess readiness before starting the upgrade?

A customer wants a rollback strategy if an upgraded service becomes unstable. Which BEST PRACTICE provides the most reliable rollback capability for Cloud Pak for Data workloads?

After an upgrade, users report they cannot log in to the Cloud Pak for Data web UI, but the OpenShift console is accessible. Which is the MOST likely first check?

An enterprise requires that Cloud Pak for Data upgraded services continue to run with restricted outbound connectivity (no direct internet). Which action is MOST important to ensure a successful upgrade in this environment?

Following an upgrade, a service pod is stuck in CrashLoopBackOff and logs show repeated 'permission denied' errors when writing to its mounted volume. What is the MOST likely root cause?

A team is upgrading Cloud Pak for Data and wants to minimize downtime for business users. Which upgrade approach BEST supports controlled rollout and quick validation of functionality?

After upgrading, workloads using the internal certificate authority begin failing with TLS handshake errors when calling other Cloud Pak for Data endpoints. What is the BEST corrective action?

A customer is migrating data for a Cloud Pak for Data service during an upgrade and must preserve metadata and lineage. Which approach is MOST appropriate?

During a Cloud Pak for Data upgrade, the operator reports 'reconcile failed' for a service instance, and the service CR shows repeated status transitions without becoming Ready. Cluster events show failures creating PersistentVolumeClaims due to 'no matching storage class'. What should the administrator do FIRST?

A regulated environment requires strict separation of duties. After upgrade, the security team mandates that only a limited group can perform service upgrades while platform operators can manage cluster resources. Which design BEST supports this requirement within Cloud Pak for Data operations?

During upgrade planning, an administrator must confirm whether the cluster can host IBM Cloud Pak for Data workloads after the upgrade. Which check is MOST appropriate to validate the cluster is prepared before starting any upgrade steps?

An organization has strict change-control policies and wants to ensure that an IBM Cloud Pak for Data upgrade can be repeated consistently across multiple clusters (dev, test, prod). What is the BEST approach?

After an upgrade, some users report they can no longer access the Cloud Pak for Data web console due to certificate warnings and occasional route failures. Which action is the BEST initial step to restore stable access?

A customer is upgrading Cloud Pak for Data and wants to minimize risk by upgrading the platform first and then upgrading services incrementally. Which sequencing best aligns with recommended practice?

After upgrading, the operator pods are running but a specific service remains in a 'Not Ready' state. The administrator suspects the service upgrade did not reconcile correctly. What is the MOST effective next step?

A team is migrating workloads to a new cluster as part of an upgrade strategy. They need to preserve project assets (such as notebooks, connections, and project metadata) while minimizing manual rework. Which approach is MOST appropriate?

During an upgrade, the cluster has multiple storage classes. Some services require file storage with ReadWriteMany (RWX) access, but the default storage class is block (ReadWriteOnce). What is the BEST practice to avoid upgrade failures due to incorrect storage provisioning?

A customer performs an in-place upgrade and later finds that some service pods cannot pull images from the registry. The cluster is in a restricted network environment. Which root cause is MOST likely?

After upgrading, workloads experience intermittent failures and the administrator notices frequent pod evictions due to node pressure. The cluster previously ran near capacity. What is the BEST optimization step to reduce instability while preserving upgrade success?

As part of an upgrade with a rollback plan, the team wants to ensure they can restore the platform state if the upgrade fails after persistent data changes. Which strategy is MOST appropriate?

During upgrade planning, an administrator must confirm the OpenShift cluster can accommodate additional pods that will be scheduled temporarily during the upgrade. Which pre-upgrade check best addresses this requirement?

A team wants to reduce risk during an IBM Cloud Pak for Data upgrade by ensuring they can roll back quickly if issues occur. Which approach is most aligned with best practices?

After upgrading IBM Cloud Pak for Data, an administrator notices that newly created service instances fail because the operator cannot pull images from the internal registry. Existing workloads continue running. What is the MOST likely cause?

A cluster uses an external enterprise container registry that requires custom CA certificates. During the Cloud Pak for Data upgrade, image pulls fail with x509 certificate errors. What is the recommended fix?

An upgrade assessment identifies that some Cloud Pak for Data services use large persistent volumes and are sensitive to I/O latency. The customer wants to minimize downtime during migration-related steps. Which strategy is most appropriate?

After upgrade, a data governance service reports missing lineage metadata, but the underlying database pods are healthy. Which action is the BEST next step to confirm whether the issue is caused by a failed post-upgrade migration job?

A customer wants to ensure that only one Cloud Pak for Data control plane upgrade occurs at a time to avoid operator conflicts. Which operational control is most appropriate?

Following an upgrade, several pods are stuck in Pending state. Events show: "0/6 nodes are available: 6 node(s) had taint {node.kubernetes.io/memory-pressure: }, that the pod didn't tolerate." What is the BEST corrective action?

During an in-place upgrade, the platform operator remains in a reconciling state and repeatedly reports RBAC "forbidden" errors when attempting to list resources in another namespace. The OpenShift cluster uses restricted permissions for service accounts. What is the MOST likely resolution?

A customer uses a multi-zone OpenShift cluster and reports that after upgrade, a stateful service experiences intermittent timeouts. Investigation shows pods are spread across zones but the underlying storage backend has higher latency cross-zone. Which architecture change is MOST appropriate to improve performance while maintaining availability?

During upgrade planning, an administrator must confirm that the target OpenShift cluster can support the Cloud Pak for Data workload after the upgrade. Which check is MOST critical to prevent upgrade failure due to scheduling constraints?

An administrator is running the CP4D upgrade and notices that some operators are stuck in a progressing state. What is the BEST first action to identify whether the issue is caused by underlying OpenShift cluster health rather than CP4D itself?

A team is upgrading CP4D and wants to minimize risk by ensuring they can recover quickly if something goes wrong. Which approach is a BEST PRACTICE for protecting platform state prior to the upgrade?

After upgrading, a data governance service remains unavailable even though its operator is healthy. The service pods show repeated mount errors for their persistent volumes. Which is the MOST likely cause?

A customer upgraded CP4D and now needs to migrate project assets from a legacy environment into the upgraded instance while preserving relationships (e.g., connections, notebooks, and metadata). Which approach is MOST appropriate?

During an upgrade, the installer reports that an image pull is failing with authorization errors. The cluster uses an internal registry mirror and restricted egress. What is the BEST remediation?

An organization requires that after the upgrade, CP4D services continue to use corporate TLS certificates for external endpoints. What is the BEST way to ensure certificates remain consistent across operator reconciliations?

After upgrading, users report slow performance when browsing project assets, but compute-intensive workloads run normally. Metrics show high API server latency and frequent etcd compaction warnings. What is the BEST next step to optimize platform performance?

A regulated enterprise is upgrading CP4D in an environment with strict change control. They want a repeatable, auditable method to apply post-upgrade configuration changes (e.g., enabling services, setting resource overrides) across dev/test/prod with minimal drift. Which approach is BEST?

After an upgrade, a critical service fails to become ready. Operator logs show repeated reconciliation loops due to an invalid custom resource field that was acceptable in the old environment but is now rejected. What is the BEST resolution path?