Oracle Cloud Infrastructure 2022 Architect Professional — Question 13

A company runs a public-facing application that uses a Java-based web service via a RESTful API in their on-premises data center. Use of the API is expected to double with a new product launch. The business wants to migrate their application to Oracle Cloud Infrastructure (OCI) to meet the scale and reliability requirements.
In order to achieve this, they will divert only 40% of the traffic to the new Apache Tomcat web servers running on OCI and serve the remaining 60% traffic through their on-premises infrastructure. Once the migration is complete and application works fine, they will divert all traffic to OCI.
How can these requirements be met with the LEAST amount of effort?

Answer options

• A. Set up a VPN connectivity between on-premises infrastructure and OCI and create routing tables to distribute traffic between them.
• B. Use OCI Traffic management service with Failover steering policy and distribute traffic between OCI and on-premises infrastructure.
• C. Use OCI Load Balancing service to distribute traffic between OCI and on-premises infrastructure.
• D. Use OCI Traffic management service with Load Balancing steering policy and distribute traffic between OCI and on-premises infrastructure.

Correct answer: D

Explanation

The correct answer is D because using OCI Traffic management service with Load Balancing steering policy allows for efficient distribution of traffic between the OCI and on-premises infrastructure, meeting the requirement to handle varying traffic loads easily. Options A and C require more manual configuration and do not utilize the built-in traffic management features, while B's Failover policy is not suited for the distribution of traffic as needed.