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Oracle Cloud Infrastructure 2025 Migration Architect Professional Free Sample Questions

Description

Covers cloud migration fundamentals, OCI networking for migrations, the Oracle Cloud Migrations service, Oracle Cloud VMware Solution, containerized application migration, and database migration.

12 free sample questions180 in the full practice test

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1Z0-1123-25 Sample Questions

  1. Question 1

    Intermediate

    Fundamentals of Cloud Migrations · TCO analysis

    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?

    Answer and explanation

    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.

  2. Question 2

    Beginner

    Fundamentals of Cloud Migrations · 6Rs of migration

    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?

    Answer and explanation

    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.

  3. Question 3

    Intermediate

    Fundamentals of Cloud Migrations · Migration waves and phased migration

    A multinational logistics company is planning a phased migration of 500 applications to OCI. To mitigate risk, you are designing the migration waves. Which approach represents the industry best practice for structuring these waves?

    Answer and explanation

    Correct answer: D

    Best practice for migration waves is to start with low-risk, low-complexity workloads (Pilot) to validate the landing zone and processes. Subsequent waves should group applications based on their dependencies (affinity groups) to minimize latency and complexity, gradually moving to business-critical systems once the process is proven.

  4. Question 4

    Beginner

    Fundamentals of Cloud Migrations · 6Rs of migration

    Which of the following scenarios best describes a 'Retire' migration strategy?

    Answer and explanation

    Correct answer: C

    Retire involves identifying IT assets that are no longer useful or needed (e.g., redundant legacy systems) and turning them off without migrating them. This reduces the migration scope and TCO.

  5. Question 5

    Intermediate

    OCI Networking Services for Migrations · OCI Connectivity options

    You are designing the network architecture for a large-scale migration of a transactional banking system to OCI. The system requires consistent 5 Gbps throughput and strict SLA guarantees for latency. The security team mandates that traffic must not traverse the public internet. Which connectivity option should you recommend?

    Answer and explanation

    Correct answer: C

    FastConnect provides dedicated, private connectivity with consistent performance and SLAs, bypassing the public internet. For 5 Gbps consistent throughput and strict latency requirements, FastConnect is superior to VPN (which runs over the internet and varies in performance). Private Peering allows access to private IPs in the VCN.

  6. Question 6

    Advanced

    OCI Networking Services for Migrations · OCI Connectivity options

    An organization has established an OCI FastConnect link for their migration. However, their security compliance standard requires all data in transit to be encrypted at Layer 3 using IPSec, even over private dedicated links. What is the correct configuration to achieve this?

    Answer and explanation

    Correct answer: C

    OCI supports running IPSec VPN over FastConnect. You establish the FastConnect virtual circuit (Private Peering) first, and then configure the Site-to-Site VPN to use the FastConnect path (routing via DRG) rather than the internet. This provides the performance of FastConnect with the Layer 3 encryption of IPSec.

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