AWS Certified Advanced Networking - Specialty ANS-C01Demo

By Amazon · Question Mode

QuestionQ91

Network Design

A company runs its application servers on Amazon EC2 instances. The EC2 instances run in separate VPCs that connect through a transit gateway. The EC2 instances launch in a private subnet with a route to the transit gateway for internal and external connectivity. External connectivity is provided by a VPC with firewall devices that inspect packets entering and leaving through an internet gateway.

A network engineer needs to help the company’s application team increase the payload size per packet delivered between the EC2 instances. All network connectivity must pass through the transit gateway.

What should the network engineer do to meet these requirements?

  • A Enable jumbo frames on the transit gateway. Instruct the application team to set the maximum transmission unit (MTU) of the system’s network interfaces to 9001 bytes.
  • B Instruct the application team to set the maximum transmission unit (MTU) of the VPC to 8500 bytes.
  • C Instruct the application team to set up enhanced networking on the system by using the enhanced networking adapter. Set the maximum transmission unit (MTU) to 9001 bytes.
  • D Instruct the application team to set the maximum transmission unit (MTU) of the system’s network interfaces to 8500 bytes.
Explanation

AWS Transit Gateway supports an MTU of 8,500 bytes for traffic between VPC attachments. Setting each EC2 instance network interface to an MTU of 8,500 bytes enables the largest supported packet size on the required transit-gateway path; 9,001-byte frames exceed that path’s MTU. AWS Transit Gateway quotas — Maximum transmission unit (MTU)

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