Oracle Cloud Infrastructure Migration Architect Professional Exam Practice Test
Cloud migration architecture connects workload assessment with target design, data movement, cutover, and post-migration validation. This practice page addresses decisions such as matching compute capacity to workload needs, estimating transfer time under bandwidth limits, identifying application dependencies, and planning resilient OCI placements. Its scenarios also touch on access patterns for Object Storage and methods for detecting application failures after a move.
Exam overview
About the Oracle Cloud Infrastructure Migration Architect Professional Exam
Migration planning requires understanding how applications depend on operating systems, packages, databases, identity services, and shared infrastructure. Architects assess whether a workload can move with minimal change or needs remediation when the target platform lacks a required feature. They use dependency maps to sequence migrations and coordinate cutovers, while comparing source and target configurations to limit drift. Data-transfer planning involves relating dataset size, usable network throughput, and the migration deadline before choosing an online or offline approach. Target design decisions include selecting compute shapes for CPU and memory profiles, placing instances to reduce exposure to host failures, and controlling file access through an authenticated application. After cutover, logs and metrics help locate intermittent failures and verify throughput against workload peaks. Regulated-data scenarios also call for a documented handling decision based on the data’s sensitivity and applicable controls.
Sample Practice Questions
Review a selection from this exam's published US Practice Tests practice bank.
A company is choosing OCI compute shapes for a migrated service. Its workload has steady CPU demand but needs memory capacity beyond what its current server provides. Which sizing approach is most appropriate?
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Correct answer: BRepresentative utilization measurements provide a sound basis for sizing. Matching both CPU and memory needs, while allowing reasonable headroom, avoids relying on a single server specification or excessive overprovisioning.
A migration team needs to move a very large amount of data to OCI, but the available network connection has limited bandwidth and a strict transfer deadline. What planning calculation is most important before selecting a transfer method?
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Correct answer: AA realistic transfer-time estimate uses data volume and effective throughput, allowing for overhead and operational constraints. The other measurements do not determine whether the transfer can finish within the deadline.
A team is moving a service that stores files in OCI Object Storage and wants to make the files available to users only through an authenticated application. Which design best supports this access pattern?
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Correct answer: AA private bucket with narrowly scoped application authorization avoids exposing objects publicly while allowing the application to retrieve them. Public access based on obscurity and broad tenancy permissions increase risk.
A migration team is deciding whether an application is suitable for a move with minimal architectural change. The application depends on a legacy operating system feature unavailable on the proposed target platform. What should the team do first?
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Correct answer: AA dependency that is unavailable on the target can affect compatibility and migration feasibility. The team should investigate the requirement and evaluate supported infrastructure or remediation choices before finalizing the approach.
A migration program includes several applications with dependencies on shared databases and identity services. What planning artifact is most useful for sequencing their moves?
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Correct answer: AA dependency map helps the team identify which services must be available before or during each workload move, supporting sensible migration waves and reducing service disruption.
A service is being migrated to OCI and must continue accepting requests if one physical host fails. Which compute placement feature is designed to reduce the impact of host-level failure for instances in the same availability domain?
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Correct answer: AFault domains are groups of hardware and infrastructure within an availability domain that help distribute instances to reduce correlated host-level failures. Route tables, storage lifecycle policies, and dynamic routing gateways serve different purposes.
After migrating an application, users report intermittent failures. Which operational practice most directly helps the team identify when and where the failures occur?
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Correct answer: ACentralized logs and service metrics provide evidence for correlating failures across application and infrastructure components. Removing timestamps or disabling telemetry makes diagnosis more difficult.
How to use this practice test
The free practice bank contains 50 questions, with up to 20 random questions in a session. Use each session to test migration decisions across sizing, dependencies, transfer planning, resilience, and operations. Results appear after the session; review missed questions by identifying which workload constraint or target-environment assumption drove the decision.
Preparation tips
- For transfer scenarios, calculate whether the dataset can move within the deadline using realistic throughput rather than link speed alone; account for protocol overhead and competing traffic.
- Build a dependency map that includes shared databases, identity services, and operating-system requirements, then use it to reason about migration order and cutover risk.
- Compare source and target CPU, memory, OS features, and installed packages before selecting a migration approach; flag unsupported dependencies for remediation or redesign.
- Connect resilience choices to the failure being addressed: consider host-level placement separation, then define post-cutover logs and metrics that can expose intermittent errors and peak-throughput gaps.
- For regulated-data scenarios, identify the data sensitivity and required handling controls before deciding where and how it should be stored or accessed.