Oracle Cloud Infrastructure 2025 Migration Architect Professional Practice Exam 2025: Latest Questions

A migration team is building a program plan for moving 120 on-premises applications to OCI. Leadership wants an approach that reduces risk by migrating similar applications together and validating each wave before continuing. Which planning approach best fits this requirement?

A company wants to migrate an on-premises web application to OCI with minimal changes. They need the target environment to closely resemble their current VM-based deployment, and they want fast provisioning using an image. Which OCI capability is the most appropriate for this lift-and-shift approach?

A migration architect needs to ensure that data copied from an on-premises system to OCI Object Storage is not altered in transit and can be verified after transfer. Which practice best addresses this requirement?

After migrating an application to OCI, operations wants to receive alerts when CPU utilization stays above a threshold for a sustained period and to route notifications to email and a webhook endpoint. Which OCI services are the best fit?

A company is migrating a multi-tier application to OCI. The database will run in a private subnet, and the application tier must be reachable from the internet only through a controlled entry point. Which design best meets this requirement?

During migration planning, an architect discovers that two critical applications share a database schema and must be cut over together to avoid data inconsistency. Which dependency category does this represent, and what is the best implication for the migration plan?

A team uses OCI Database Migration (DMS) to replicate changes from an on-premises database to an OCI database target. After starting replication, they notice the target is lagging and the gap keeps growing during peak hours. Which action is most likely to reduce replication lag without changing the application?

After migrating a set of microservices to OCI, users report intermittent timeouts. Monitoring shows spikes in latency at the ingress but no CPU saturation on backend instances. Logs show many new TCP connections. Which optimization is most likely to improve reliability and performance?

A financial services company must migrate an on-premises application to OCI. Requirements include: (1) no direct public internet access to application instances, (2) controlled inbound access for customers, (3) least-privilege egress to specific external services, and (4) centralized inspection of outbound traffic. Which architecture best meets these requirements?

A large enterprise migrates hundreds of VMs to OCI. After cutover, operations discovers inconsistent security settings: some instances have overly permissive network security rules and others lack required monitoring. The team needs a scalable way to enforce and continuously validate configuration standards across compartments. Which approach is best?

A team is preparing an OCI migration and must classify on-prem applications into rehost, refactor, retire, or retain. They want to reduce risk and prioritize effort before designing target architectures. Which activity best supports this goal?

Your organization needs a repeatable, guardrailed OCI foundation for multiple application migrations. Which approach is considered best practice to standardize IAM, network, and logging controls across teams?

A migrated compute instance in OCI must be reachable from the internet on HTTPS. The instance is in a public subnet, has a public IP, and the route table includes a default route to an Internet Gateway. The security list allows ingress on TCP 443 from 0.0.0.0/0. What is the most likely missing configuration?

A company is migrating a mission-critical application that must tolerate an Availability Domain outage with minimal data loss. Which target design best meets this requirement using native OCI services?

You are migrating a large on-prem file share used by thousands of clients. The target in OCI is File Storage. The migration must minimize cutover time and allow incremental syncs before the final switchover. Which approach is most appropriate?

A migration requires connecting multiple on-prem networks to a hub VCN in OCI, and also enabling transitive routing between several spoke VCNs. Which design is recommended?

After migrating an application to OCI, users report intermittent latency spikes. Metrics show normal CPU and memory, but the load balancer backend connections occasionally surge and error rates increase during deployments. Which operational improvement is most likely to stabilize the service?

A team is migrating containerized microservices and wants to minimize management overhead while keeping portability. They need private networking to OCI services and controlled access from the internet. Which target architecture best fits?

During a migration, a security team requires that compute instances have no public IPs, but application teams still need to patch operating systems and download packages from public repositories. Which solution best meets this requirement in OCI while maintaining a strong security posture?

A regulated enterprise requires that all migrated data at rest is encrypted with customer-managed keys, with separation of duties so that cloud administrators cannot decrypt data. Which approach best satisfies this requirement across multiple OCI services?

A company is migrating a 3-tier application to OCI. After a pilot cutover, users report intermittent timeouts to the application tier. The compute instances are healthy, but the issue occurs only when traffic is routed through the public endpoint. Which OCI design change is the BEST practice to improve availability and reduce intermittent connectivity issues during and after migration?

You are planning a migration of several on-premises applications to OCI. Business leadership wants a single, consistent way to classify workloads by criticality, owner, environment, and cost center so that operations and chargeback can be standardized after migration. Which approach BEST supports this requirement across all OCI resources?

During a database migration to OCI, you set up Oracle GoldenGate for near-zero downtime replication. After cutover, you notice that some downstream reports show inconsistent data for a short period, even though replication lag is near zero. What is the MOST likely cause to investigate first?

A company uses OCI Database Migration (DMS) for an online migration. The migration job repeatedly fails during validation with connectivity errors to the source database. The source is on-premises, reachable over a private circuit, and the team confirms the database listener is accessible from some OCI hosts. What is the BEST next troubleshooting step specific to how DMS executes connectivity?

After migrating an on-prem application to OCI, operations observes periodic packet loss between two application tiers hosted in different VCNs. The tiers communicate through a DRG because the networking team connected multiple VCNs via DRG attachments. Security teams require minimal blast radius, and application owners require predictable east-west connectivity. What is the BEST architectural change to reduce complexity and improve east-west routing predictability?