A Solutions Architect Needs to Design a Highly Available Application

Multiple Choice

A Solutions Architect needs to design a highly available application that will allow authenticated users to stay connected to the application even when there are underlying failures. Which solution will meet these requirements?

A) Deploy the application on Amazon EC2 instances. Use Amazon Route 53 to forward requests to the EC2 instances. Use Amazon DynamoDB to save the authenticated connection details.
B) Deploy the application on Amazon EC2 instances in an Auto Scaling group. Use an internet-facing Application Load Balancer to handle requests. Use Amazon DynamoDB to save the authenticated connection details.
C) Deploy the application on Amazon EC2 instances in an Auto Scaling group. Use an internet-facing Application Load Balancer on the front end. Use EC2 instances to save the authenticated connection details.
D) Deploy the application on Amazon EC2 instances in an Auto Scaling group. Use an internet-facing Application Load Balancer on the front end. Use EC2 instances hosting a MySQL database to save the authenticated connection details.