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Multiple ChoiceDesign Secure Architectures
Question 21. A solutions architect is designing the architecture for a two-tier web application. The web application consists of an internet-facing Application Load Balancer (ALB) that forwards traffic to an Auto Scaling group of Amazon EC2 instances. The EC2 instances must be able to access an Amazon RDS database. The company does not want to rely solely on security groups or network ACLs. Only the minimum resources that are necessary should be routable from the internet. Which network design meets these requirements?
A. Place the ALB, EC2 instances, and RDS database in private subnets.
B. Place the ALB in public subnets. Place the EC2 instances and RDS database in private subnets.
C. Place the ALB and EC2 instances in public subnets. Place the RDS database in private subnets.
D. Place the ALB outside the VPC. Place the EC2 instances and RDS database in private subnets.
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