1Z0-997-25 Question 103
Single answerAn international manufacturing company is expanding into multi-cloud with workloads in Oracle Cloud Infrastructure (OCI) and existing applications in Microsoft Azure. They already have an ExpressRoute connection between their on-premises data center and Azure. They need a reliable, low-latency design that minimizes data egress costs and securely connects on-premises, Azure, and OCI. Which approach should you recommend?
- A
Use a site-to-site VPN for both Azure and OCI, relying on public internet routes for cross-cloud traffic.
- B
Retain the existing ExpressRoute to Azure, add a dedicated FastConnect to OCI, and utilize the Azure�OCI Interconnect for cross-cloud traffic.
- C
Use the existing ExpressRoute to Azure and route all OCI traffic through Azure over the public internet.
- D
Terminate the ExpressRoute to reduce costs and set up a single FastConnect to OCI, using VPN-based tunnels to reach Azure.
Show answer and explanation
Correct answer: B
Explanation
In a multi-cloud deployment involving OCI and Azure, it is a best practice to establish direct, private connectivity to each cloud if performance, security, and cost optimization are critical. Maintaining ExpressRoute for Azure and adding FastConnect for OCI ensures each environment� data can flow directly at low latency and with predictable costs. Azure�OCI Interconnect then securely bridges traffic between the two clouds without relying on the public internet. Refer to the Oracle documentation and Azure�OCI Interconnect guides for best practices on minimizing data egress and providing consistent performance.
- A. Incorrect.
Incorrect. While site-to-site VPNs can offer secure tunnels, relying on the public internet for cross-cloud interactions introduces potential latency and reliability issues. This setup also does not minimize data egress costs since traffic would traverse the public internet.
- B. Correct.
Correct. Retaining ExpressRoute to Azure and adding OCI FastConnect gives dedicated paths to each cloud. The Azure�OCI Interconnect then provides low-latency, private cross-cloud connectivity. This approach optimizes routing, reduces egress charges, and avoids performance bottlenecks.
- C. Incorrect.
Incorrect. Solely using ExpressRoute and routing OCI traffic through the public internet adds latency and can incur higher data transfer costs. You lose the benefits of a direct connection to OCI, risking a single point of failure and increased egress fees.
- D. Incorrect.
Incorrect. Terminating ExpressRoute in favor of FastConnect alone forces Azure traffic over VPN-based tunnels, which diminishes performance and reliability. Eliminating ExpressRoute also means losing a direct, potentially lower-cost path to Azure.