Question 18

Question

A company manages a web application that runs on Amazon EC2 instances behind an Application
Load Balancer (ALB). The EC2 instances run in an Auto Scaling group across multiple Availability
Zones. The application uses an Amazon RDS for MySQL DB instance to store the dat
a. The company has configured Amazon Route 53 with an alias record that points to the ALB.
A new company guideline requires a geographically isolated disaster recovery (DR> site with an RTO
of 4 hours and an RPO of 15 minutes.
Which DR strategy will meet these requirements with the LEAST change to the application stack?

Accepted Answer

Launch a replica environment of everything except Amazon RDS in a different AWS Region. Create
an RDS read replica in the new Region and configure the new environment to point to the local RDS
DB instance. Add the new stack to the Route 53 record set by using a health check to configure a
failover routing policy. In the event of an outage promote the read replica to primary.

Quinn I. · Answer

B tbh, this setup feels right based on official guide and practice test questions.

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