ExpertHard1 markMultiple Choice
AWS SAP-C02 · Question 39 · Domain 2.5: Performance
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?
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:
A.
Elastic Network Adapter (ENA)
B.
Elastic Fabric Adapter (EFA)
C.
AWS Direct Connect
D.
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) 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).
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