Free 1Z0-1123-25 sample questions

Correct answer: The reduction of operational expenses (OpEx) by calculating the 'Right-sizing' of compute resources based on actual historical utilization metrics rather than provisioned capacity.

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.

Correct answer: Rehost

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.

Correct answer: Group applications by technical complexity and dependency, starting with a 'Pilot' wave of low-complexity, non-critical applications, followed by waves of increasing complexity.

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.

Correct answer: Identifiying that 20% of the server fleet hosts a legacy reporting tool that has been superseded by a SaaS solution, and decommissioning these servers.

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.

Correct answer: OCI FastConnect with a Private Peering virtual circuit.

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.

Correct answer: Establish a Site-to-Site VPN connection and configure it to route traffic over the FastConnect Private Peering Virtual Circuit using the DRG.

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.