ANS-C01 · Question #87
A network engineer deploys an application in a private subnet in a VPC that connects to many external video feed providers using RTMP over the internet. A NAT gateway has been deployed in a public sub
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Question
A network engineer deploys an application in a private subnet in a VPC that connects to many external video feed providers using RTMP over the internet. A NAT gateway has been deployed in a public subnet and is working as expected. From the Amazon EC2 instance, the application is able to connect to all feed providers except one, which hangs when connecting. Manually testing a connection from an Amazon EC2 instance in the public subnet to the problem feed indicates that the feed works as expected. What is causing this issue?
Options
- AThe NAT gateway does not support fragmented packets.
- BThe internet gateway only supports an MTU of 1500 bytes.
- CAn Amazon EC2 instance expects to communicate with an MTU of 9001.
- DThe security group on the instances does not allow PMTUD.
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