AWS Certified Solutions Architect – Professional — Question 182

IAM Secure and Scalable is an organization which provides scalable and secure SAAS to its clients. They are planning to host a web server and App server on
AWS VPC as separate tiers. The organization wants to implement the scalability by configuring Auto Scaling and load balancer with their app servers (middle tier) too.
Which of the below mentioned options suits their requirements?

Answer options

• A. Since ELB is internet facing, it is recommended to setup HAProxy as the Load balancer within the VPC.
• B. Create an Internet facing ELB with VPC and configure all the App servers with it.
• C. The user should make ELB with EC2-CLASSIC and enable SSH with it for security.
• D. Create an Internal Load balancer with VPC and register all the App servers with it.

Correct answer: D

Explanation

The correct answer is D because an Internal Load Balancer is appropriate for distributing traffic among application servers within a private network, ensuring security and efficiency. Option A suggests using HAProxy, which is unnecessary when AWS provides a suitable solution. Option B would expose the app servers to the internet, which contradicts the requirement for a scalable internal architecture. Option C incorrectly suggests using EC2-CLASSIC, which is outdated and not applicable in this context.