1Z0-1123-25 Oracle Cloud Infrastructure 2025 Migration Architect Professional Practice Questions
Prepare for 1Z0-1123-25 with more than an answer.
- Exam fee
- $245 USD
- Time limit
- 90 minutes
- Level
- Professional
- Valid for
- Cloud Recertification policy
Domains covered on the exam 7
- Fundamentals of Cloud Migrations10%
- OCI Networking Services for Migrations5%
- Design and Implement Migrations Using Oracle Cloud Migrations Service25%
- Design and Implement Migrations Using Oracle Cloud VMware Solution (OCVS)15%
- Migrate Containerized Applications to OCI10%
- Migrate Infrastructure Workloads Between OCI Regions15%
- Migrate Oracle Databases to OCI Database Services20%
- 1
You are configuring a Replication Policy in Oracle Cloud Migrations (OCM) for a critical production workload. The requirement is to have a Recovery Point Objective (RPO) of 1 hour. How does OCM handle the replication schedule to meet this requirement?
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Correct answer: B
OCM replication is snapshot-based. The Replication Policy defines the frequency (schedule) at which OCM instructs the source (e.g., vSphere) to take a snapshot. This snapshot's delta data is then transferred to OCI. To meet a 1-hour RPO, the schedule must be set to replicate at least every hour.
- 2
A Migration Architect is using Oracle Cloud Migrations (OCM) to migrate AWS EC2 instances to OCI. During the planning phase, they notice that several AWS instances are identified as 'incompatible' in the OCM console. What is the most likely reason for this status?
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Correct answer: B
OCM migrates data from persistent storage (EBS). If an EC2 instance is backed by Instance Store (ephemeral storage) for its root volume, it cannot be snapshotted and replicated in the standard way. OCM requires EBS-backed instances for compatibility.
- 3
When migrating AWS EC2 instances to OCI using Oracle Cloud Migrations (OCM), how does the service handle the mapping of AWS EBS volumes to OCI Block Volumes?
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Correct answer: B
During the planning phase in OCM, the architect can review the discovered EBS volumes and explicitly map them to OCI Block Volumes. This includes selecting the size and the performance level (Balanced, Higher Performance, UHP), allowing for cost optimization or performance tuning compared to the source.
- 4
You are managing the final cutover for a migration project using Oracle Cloud Migrations (OCM). The replication status is 'Active' and the last snapshot was taken 30 minutes ago. What is the correct sequence of actions to perform the final cutover?
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Correct answer: C
For a clean cutover with zero data loss: 1) Stop the source application/VM to ensure data consistency. 2) Manually trigger a final replication run to sync the latest data. 3) Once the final snapshot is successfully replicated, execute the Migration Plan to launch the instance in OCI.
- 5
A Global Retail Corporation is planning to migrate its legacy on-premises ERP system to Oracle Cloud Infrastructure (OCI). The CIO has mandated a comprehensive Total Cost of Ownership (TCO) analysis before approval. The current environment consists of 50 physical servers with varying utilization levels. As a Migration Architect, which factor would most significantly lower the projected TCO in OCI compared to the on-premises lift-and-shift approach, and how should you quantify it in the planning phase?
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Correct answer: B
In a physical on-premises environment, resources are often over-provisioned to handle peak loads. A significant TCO reduction in Cloud comes from 'Right-sizing'—mapping workloads to OCI instances that match actual usage (CPU/RAM 95th percentile) rather than the physical hardware specs. This should be quantified using discovery tools to measure historical utilization.
- 6
You are advising a financial institution on their cloud migration strategy. They have a legacy monolithic application running on an unsupported OS version that cannot be upgraded. The application is critical but stable, with no new feature requirements. The customer requires the application to be moved to the cloud to evacuate the data center, but code changes are strictly prohibited due to lack of developer resources. Which of the '6 Rs' of migration is the most appropriate strategy for this specific workload?
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Correct answer: C
Rehost (Lift and Shift) is the correct strategy here. Since the OS cannot be changed (ruling out Replatform) and code changes are prohibited (ruling out Refactor/Rearchitect), moving the virtual machine 'as-is' to OCI (potentially using OCVS if the OS is not supported on native Compute) is the only viable path to meet the data center evacuation goal.
