Oracle Cloud Infrastructure 2020 Architect Professional — Question 49

A large financial company has a web application hosted in their on-premises data center. They are migrating their application to Oracle Cloud Infrastructure (OCI) and require no downtime while the migration is on-going. In order to achieve this, they have decided to divert only 30% of the traffic to the new application running in OCI and keep the rest 70% traffic to their on-premises infrastructure. Once the migration is complete and application works fine, they will divert all traffic to OCI.
As a solution architect working with this customer, which suggestion should you provide them? (Choose the best answer.)

Answer options

• A. Use OCI Traffic management with Failover steering policy and distribute the traffic between OCI and on-premises infrastructure.
• B. Use an OCI Load Balancer and distribute the traffic between OCI and on-premises infrastructure.
• C. Use VPN connectivity between on-premises infrastructure and OCI, and create routing tables to distribute the traffic between them.
• D. Use OCI Traffic management with Load Balancing steering policy and distribute the traffic between OCI and on-premises infrastructure.

Correct answer: D

Explanation

The correct answer is D because using OCI Traffic management with a Load Balancing steering policy allows for controlled distribution of traffic, which is essential during the migration process. Option A is incorrect because a Failover steering policy does not support the gradual traffic distribution needed here. Option B lacks the necessary detail for traffic management during the migration. Option C focuses on VPN connectivity, which is not the optimal strategy for managing traffic flow in this scenario.