ANS-C01 Question 206
Single answerYour organization has deployed an SD-WAN solution to connect branch offices to AWS. You want to optimize traffic flow from the branch offices to a centralized VPC while minimizing latency and ensuring scalability. Which solution using AWS Transit Gateway Connect would best achieve this goal?
- A
Establish GRE tunnels between the SD-WAN edge devices and Transit Gateway Connect attachments, and route traffic through these tunnels.
- B
Directly connect branch offices to AWS using Site-to-Site VPN without leveraging Transit Gateway Connect.
- C
Use Transit Gateway Connect to integrate your SD-WAN appliances with Transit Gateway and configure BGP for dynamic routing between the SD-WAN network and the VPCs.
- D
Set up multiple Transit Gateway Connect attachments in each VPC and manually configure static routes to direct traffic.
Show answer and explanation
Correct answer: C
Explanation
Transit Gateway Connect is designed to integrate SD-WAN solutions with AWS, enabling optimized traffic flow between branch offices and AWS. By using GRE tunnels and BGP, it supports dynamic routing and scalability, which are critical for large-scale, distributed networks. This approach minimizes latency and simplifies traffic management compared to alternatives like static routes or Site-to-Site VPN.
- A. Incorrect.
This is the correct solution because Transit Gateway Connect supports GRE tunnels, but combining it with BGP for dynamic routing ensures scalability, optimal traffic management, and minimized latency.
- B. Incorrect.
While Site-to-Site VPN can be used to connect branch offices, it does not leverage Transit Gateway Connect's capabilities, such as dynamic routing or integration with SD-WAN solutions, making it less efficient for this scenario.
- C. Correct.
This option is correct as it integrates SD-WAN appliances with Transit Gateway using Transit Gateway Connect and enables dynamic routing with BGP, which scales well for large, distributed networks and minimizes latency.
- D. Incorrect.
Manually configuring static routes is error-prone and doesn't leverage the dynamic routing capabilities of Transit Gateway Connect, making it a suboptimal choice for scalability and traffic management.