Learn what other configuration is required in addition to ENA compatible kernels to support enhanced networking features between AWS instance and interface – you need to enable enhanced networking on the elastic network interface.
Table of Contents
Question
Your development team is testing the performance of a new application using enhanced networking.
They have updated the kernel to the latest version that supports the Elastic Network Adapter (ENA) driver. What is the other requirement for support?
A. Use r5 instance family only
B. Enable enhanced networking on the elastic network interface
C. Support the Intel Virtual Function driver in addition to the ENA driver.
D. Flag the Amazon Machine Image (AMI) for enhanced networking support
Answer
B. Enable enhanced networking on the elastic network interface
Explanation
The correct answer is B. Enable enhanced networking on the elastic network interface. Enhanced networking is a feature that improves the performance of network packets on EC2 instances. It requires both the ENA driver and the enhanced networking attribute on the elastic network interface (ENI) attached to the instance.
The ENA driver is a software component that interacts with the ENI, while the enhanced networking attribute is a configuration option that enables the ENI to use more network resources and features.
The other options are not correct because:
- A. Use r5 instance family only: Enhanced networking is supported by many instance families, not just r5.
- C. Support the Intel Virtual Function driver in addition to the ENA driver: The Intel Virtual Function driver is another driver that supports enhanced networking, but it is not required if the ENA driver is already installed.
- D. Flag the Amazon Machine Image (AMI) for enhanced networking support: The AMI does not need to be flagged for enhanced networking support, as this is determined by the ENI and the driver.
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