You want to ensure you have the absolute best transmission rates for an EC2 Instance, without any packet fragmentation, both inside and outside of the VPC. Which of the following would help fulfil this requirement. Choose 2 answers from the options given below

Answer options:

A.Configure an ENI for the instance for both internal and external traffic
B.Configure two ENI`s for the instance, one for internal traffic and the other for external traffic
C.Configure the single ENI for an MTU transmission rate of 9001
D.Configure the external ENI with an MTU of 1500 and the internal ENI with an MTU of 9001

Answer - B and D
Ethernet frames can come in different formats, and the most common format is the standard Ethernet v2 frame format. It supports 1500 MTU, which is the largest Ethernet packet size supported over most of the Internet.
Most Instance types also support an MTU of 9001 which can be used for internal VPC communication.
For more information on Network MTU settings, please visit the below URL:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/network_mtu.html