AWS Certified Advanced Networking – Specialty (ANS-C01) — Question 129
A company hosts its IT infrastructure in an on-premises data center. The company wants to migrate the infrastructure to the AWS Cloud in phases. A network engineer wants to set up a 10 Gbps AWS Direct Connect dedicated connection between the on-premises data center and VPCs. The company's network provider needs 3 months to provision the Direct Connect connection.
In the meantime, the network engineer implements a temporary solution by deploying an AWS Site-to-Site VPN connection that terminates to a virtual private gateway. The network engineer observes that the bandwidth of the Site-to-Site VPN connection is capped at 1.25 Gbps despite a powerful customer gateway device.
What should the network engineer do to improve the VPN connection bandwidth before the implementation of the Direct Connect connection?
Answer options
- A. Contact AWS Support to request a bandwidth quota increase for the existing Site-to-Site VPN connection.
- B. Discuss the issue with the hardware vendor. Buy a bigger and more powerful customer gateway device that has faster encryption and decryption capabilities.
- C. Create several additional Site-to-Site VPN connections that terminate on the same virtual gateway. Configure equal-cost multi-path (ECMP) routing to use all the VPN connections simultaneously.
- D. Create a transit gateway. Attach the VPCs to the transit gateway. Create several additional Site-to-Site VPN connections that terminate on the transit gateway. Configure equal-cost multi-path (ECMP) routing to use all the VPN connections simultaneously.
Correct answer: D
Explanation
The correct answer is D because creating a transit gateway allows for a more scalable and efficient way to manage multiple Site-to-Site VPN connections, enabling the use of ECMP routing to aggregate the bandwidth of all connections. Options A and B do not address the limitations of the existing VPN setup, while option C, although it suggests creating multiple connections, does not leverage the benefits of a transit gateway which is designed for such scenarios.