A company has a two-tier application architecture that runs in public and private subnets Amazon EC2 instances running the web application are in the public subnet and a database runs on the private subnet. The web application instances and the database are running in a single Availability Zone (AZ).
Which combination of steps should a solutions architect take to provide high availability for this architecture? (Select TWO.)
A . Create new public and private subnets in the same AZ for high availability
B . Create an Amazon EC2 Auto Scaling group and Application Load Balancer spanning multiple AZs
C . Add the existing web application instances to an Auto Scaling group behind an Application Load Balancer
D . Create new public and private subnets in a new AZ Create a database using Amazon EC2 in one AZ
E . Create new public and private subnets in the same VPC each in a new AZ Migrate the database to an Amazon RDS multi-AZ deployment.
Answer: B,E
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