A fintech startup has a successful web product which is built using Node.js on EC2 c4.xlarge instance with an Elastic Load Balancer. And its database is put into a RDS PostgreSQL m5.4xlarge instance. All the AWS services are built in AWS region ap-southeast-1. Your manager asked you how to design a disaster recovery system since the product did not have such a system yet. In order to determine the right services for the DR system, which questions should you ask your manager first? (Select TWO.)

Answer options:

A.Which instance type of EC2 does it need? 
B.What is the budget for the disaster recovery system?
C.What are the RTO and RPO for the product?
D.Whether another engine type of RDS is required?
E.Which type of Elastic Load Balancer does the product use?

Correct Answer – B, C
Check the AWS disaster recovery whitepaper is
https://d1.awsstatic.com/whitepapers/aws-disaster-recovery.pdf.
Option A is incorrect: Instance type of EC2 should not be the first thing to consider since it is determined by other factors such as cost.
Option B is CORRECT: Because budget affects how the DR system is designed. AWS has provided lots of cost-effective services to help achieve the budget target.
Option C is CORRECT: Because for disaster planning, the key concepts are Recovery time objective (RTO) and Recovery point objective (RPO).
Option D is incorrect: Because engine type of RDS normally does not change for a DR system.
Option E is incorrect: Because Elastic Load Balancer type is not an important element that influences how to build a disaster recovery system.