You Are Architecting an HPC Solution in AWS

question 255

Multiple Choice

You are architecting an HPC solution in AWS. The system consists of a cluster of EC2 instances that require low-latency communications between them. Which method should you use to set up a cluster to meet these requirements?

• A) Create a VPC with one subnet in a single Availability Zone. Keep the size of the subnet equal to the number of instances required in the cluster. Launch instances for the cluster in this small subnet to guarantee low-latency network performance.
• B) Create a placement group. Choose an EC2 instance type compatible with placement groups for the cluster. Launch instances for the cluster in the placement group.
• C) Launch Amazon EC2 instances with the largest available number of cores and RAM. Attach all instances to an Amazon EBS PIOPS volume. Implement a shared memory system across all instances in the cluster, using this shared EBS volume to minimize latency of communication.
• D) Choose an EC2 instance type that offers enhanced networking. Attach a 10-Gbps non-blocking elastic network interface to the instances. Configure the elastic network interface to optimize network performance to reduce latency.

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Definitions:

Variable Overhead Spending Variance

The difference between the actual variable overheads incurred and the expected costs based on standard overhead rates.

Standard Quantity

The expected or predetermined amount of materials or input required to produce a single unit of product.

Standard Price

A predetermined cost assigned to materials, labor, and overhead, used as a benchmark against which the actual costs are compared.