AWS Certified Solutions Architect – Associate (SAA-C03) — Question 799

A company plans to run a high performance computing (HPC) workload on Amazon EC2 Instances. The workload requires low-latency network performance and high network throughput with tightly coupled node-to-node communication.

Which solution will meet these requirements?

Answer options

• A. Configure the EC2 instances to be part of a cluster placement group.
• B. Launch the EC2 instances with Dedicated Instance tenancy.
• C. Launch the EC2 instances as Spot Instances.
• D. Configure an On-Demand Capacity Reservation when the EC2 instances are launched.

Correct answer: A

Explanation

A cluster placement group packs Amazon EC2 instances close together inside a single Availability Zone, which enables workloads to achieve the low-latency and high-throughput network performance required for tightly coupled HPC applications. Dedicated Instance tenancy and Spot Instances address hardware isolation and cost optimization respectively, rather than network performance. On-Demand Capacity Reservations secure compute capacity but do not influence network latency or throughput.