A company is deploying a tightly coupled High Performance Computing (HPC) application on Amazon EC2. The application requires the lowest possible network latency and highest network throughput between instances.<br/><br/>Which TWO configurations should a solutions architect implement? (Select TWO.)

Answer options:

Deploy the instances in a Spread Placement Group.

Deploy the instances in a Cluster Placement Group.

Deploy the instances across multiple Availability Zones.

Attach an Elastic Fabric Adapter (EFA) to the instances.

Use an Application Load Balancer to distribute traffic.

How to approach this question

Identify the placement group and network adapter designed for HPC.

Full Answer

For tightly coupled HPC applications, you should use a Cluster Placement Group to ensure instances are physically close to each other, providing low latency and high throughput. Additionally, using an Elastic Fabric Adapter (EFA) provides OS bypass capabilities, significantly reducing latency for inter-instance communication.

Common mistakes

Choosing Spread placement groups, which are for fault tolerance, not performance.

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