A high-performance computing (HPC) cluster runs on EC2 instances. The nodes need to communicate with each other with the absolute lowest latency and highest throughput possible, bypassing the OS kernel. Which networking feature should be used?

Answer options:

Elastic Network Adapter (ENA)

Elastic Fabric Adapter (EFA)

AWS Direct Connect

VPC Peering

How to approach this question

Identify the network interface designed for HPC workloads.

Full Answer

B.Elastic Fabric Adapter (EFA)✓ Correct

Elastic Fabric Adapter (EFA)

Elastic Fabric Adapter (EFA) is a network interface for Amazon EC2 instances that enables customers to run HPC applications requiring high levels of inter-node communications.

Common mistakes

Confusing ENA (standard enhanced networking) with EFA (HPC specific).

Question 38 All questions Question 40

Practice the full AWS Solutions Architect Professional SAP-C02 Practice Exam 3

75 questions · hints · full answers · grading

More questions from this exam

Q01An enterprise has 100 VPCs across 5 AWS Regions. They need to establish a highly available, trans...Hard Q02A company uses AWS Organizations. The CISO requires that no EC2 instances can be launched outside...Medium Q03An application uses Amazon Aurora PostgreSQL. To meet disaster recovery requirements, the databas...Hard Q04A company is setting up a new multi-account AWS environment. They want to automate the creation o...Medium Q05An organization wants to allocate AWS costs to specific departments. They use multiple AWS accoun...Medium

View all 75 questions →