Which EC2 configuration meets these requirements’?

A solutions architect is designing a high performance computing (HPC) workload on Amazon EC2 The EC2 instances need to communicate to each other frequently and require network performance with low latency and high throughput

Which EC2 configuration meets these requirements’?
A . Launch the EC2 instances in a cluster placement group in one Availability Zone
B . Launch the EC2 instances in a spread placement group in one Availability Zone
C . Launch the EC2 instances in an Auto Scaling group in two Regions and peer the VPCs
D . Launch the EC2 instances in an Auto Scaling group spanning multiple Availability Zones

View Answer

Answer: A

Explanation:

Placement groups

When you launch a new EC2 instance, the EC2 service attempts to place the instance in such a way that all of your instances are spread out across underlying hardware to minimize correlated failures. You can use placement groups to influence the placement of a group of interdependent instances to meet the needs of your workload. Depending on the type of workload.

Cluster C packs instances close together inside an Availability Zone. This strategy enables workloads to achieve the low-latency network performance necessary for tightly-coupled node-to-node communication that is typical of HPC applications.

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html