How to Check If Your EC2 Linux Instance Supports Enhanced Networking

Answer - B.

ethtool is a utility for Linux kernel-based operating system for displaying and modifying some parameters of network interface controllers (NICs) and their device drivers.

For more information on the tool please see the below link:

Out of the options provided, the correct tool to check if an EC2 Linux Instance supports Enhanced Networking is 'ethtool'.

'ethtool' is a Linux command line utility that allows users to view and modify network interface controller settings. By using 'ethtool', we can check if the EC2 instance has the required drivers and settings enabled for Enhanced Networking.

Enhanced Networking is a feature of Amazon EC2 instances that enables higher bandwidth, lower latency, and lower jitter networking. To support Enhanced Networking, the instance must have the Elastic Network Adapter (ENA) driver installed and must be launched with the appropriate instance type.

To check if an instance supports Enhanced Networking using 'ethtool', follow the below steps:

1. Log in to the EC2 instance via SSH.
2. Install 'ethtool' if it is not already installed by running the command 'sudo yum install ethtool' or 'sudo apt-get install ethtool'.
3. Run the command 'ethtool -i eth0'. This command will display information about the network interface controller.
4. Look for the 'driver' field. If the driver is 'ena', it means that the instance supports Enhanced Networking.

Therefore, option B (ethtool) is the correct answer to the question. The other options, 'networkping', 'awsnetwork', and 'tracert' are not relevant for checking Enhanced Networking support on EC2 instances.