AWS Certified Solutions Architect – Associate (SAA-C02) — Question 462

A company wants to use a custom distributed application that calculates various profit and loss scenarios. To achieve this goal, the company needs to provide a network connection between its Amazon EC2 instances. The connection must minimize latency and must maximize throughput
Which solution will meet these requirements?

Answer options

• A. Provision the application to use EC2 Dedicated Hosts of the same instance type.
• B. Configure a placement group for EC2 instances that have the same instance type.
• C. Use multiple AWS elastic network interfaces and link aggregation.
• D. Configure AWS PrivateLink for the EC2 instances.

Correct answer: B

Explanation

A cluster placement group logically groups EC2 instances of the same type within a single Availability Zone, which significantly reduces network latency and maximizes throughput for distributed applications. Dedicated Hosts (Option A) and AWS PrivateLink (Option D) are designed for physical isolation and secure private connectivity respectively, rather than optimizing high-performance inter-instance network speeds. Using multiple elastic network interfaces with link aggregation (Option C) is not a supported configuration for aggregating bandwidth on EC2 instances.