Questions 34 to 36
Explanations for questions 34 to 36
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Question 34
A legacy tightly-coupled High Performance Computing (HPC) application will be migrated to AWS. Which network adapter type should be used?
- Elastic Network Interface (ENI)
- Elastic Network Adapter (ENA)
- Elastic Fabric Adapter (EFA)
- Elastic IP Address
Correct Answer: 3
Explanation: An Elastic Fabric Adapter is an AWS Elastic Network Adapter (ENA) with added capabilities. The EFA lets you apply the scale, flexibility, and elasticity of the AWS Cloud to tightly-coupled HPC applications. It is ideal for tightly coupled app as it uses the Message Passing Interface (MPI).
INCORRECT: “Elastic Network Interface (ENI)” is incorrect. The ENI is a basic type of adapter and is not the best choice for this use case.
INCORRECT: “Elastic Network Adapter (ENA)” is incorrect. The ENA, which provides Enhanced Networking, provides high bandwidth and low inter-instance latency, but it does not support the features for a tightly-coupled app that the EFA does.
CORRECT: “Elastic Fabric Adapter (EFA)” is the correct answer.
INCORRECT: “Elastic IP Address” is incorrect. An Elastic IP address is just a static public IP address, it is not a type of network adapter.
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