Oracle Cloud Infrastructure 2021 Multicloud Architect Associate — Question 18

An insurance company has contracted you to help automate their application business continuity plan. They have the application running in eu-frankfurt-1 as the primary site and uk-london-1 as a disaster recovery site. Normally they have a DNS A record associated with the IP address of the primary endpoint in eu- frankfurt-1. In the event of a disaster, they use OCI DNS Zone Management to update the A record and replace it with the IP address of the endpoint in uk- londond-1.
How can you automate the failover process? (Choose the best answer.)

Answer options

• A. Create a Health Check that evaluates both regional endpoints. Create a Traffic Management Steering policy with Failover type and associate it with the Health Check.
• B. Create a Traffic Management Steering policy with Load Balancer type and add both eu-frankfurt-1 and uk-london-1 endpoints. Attach the Traffic Management Steering policy to the A record.
• C. Provision a Load Balancer in Frankfurt and associate it with the A record in DNS. Create a backend set with backend servers from both eu-frankfurt-1 and uk- london-1 regions.
• D. Create a Traffic Management Steering policy and attach it to a backend servers from both eu-frankfurt-1 and uk-london-1 regions.

Correct answer: B

Explanation

The correct answer, B, is appropriate because it leverages a Traffic Management Steering policy with Load Balancer type, allowing seamless failover between the two endpoints. Option A is incorrect as it uses a Health Check with a Failover type, which is not as effective for this scenario. Option C incorrectly suggests using a Load Balancer without the necessary Traffic Management Steering policy, and option D fails to address the DNS A record requirement for proper failover management.