Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 795 discussion

Options BD

A - Global Accelerator is not designed for tightly coupled HPC environments. It focuses on improving performance for geographically distributed users, not for low-latency intra-cluster communication. B - FSx for Lustre is specifically designed for HPC workloads and integrates well with Amazon S3 for high-throughput and low-latency access to data. C - CloudFront does not address the low-latency, high-bandwidth networking or storage requirements of tightly coupled HPC environments. D - EFA is a network interface that provides low-latency, high-throughput connectivity for tightly coupled HPC workloads, such as those using MPI (Message Passing Interface). E - Elastic Beanstalk is used for deploying and managing web applications and services, which has nothing to do with HPC.

BD looks right

Elastic Fabric Adapter (EFA) • Improved ENA for HPC, only works for Linux • Great for inter-node communications, tightly coupled workloads • Leverages Message Passing Interface (MPI) standard • Bypasses the underlying Linux OS to provide low-latency, reliable transport