A retail company has an on-premises data center in Europe. The company also has a multi-Region AWS presence that includes the eu-west-1 and us-east-1 Regions. The company wants to be able to route network traffic from its on-premises infrastructure into VPCs in either of those Regions. The company also needs to support traffic that is routed directly between VPCs in those Regions. No single points of failure can exist on the network. The company already has created two 1 Gbps AWS Direct Connect connections from its on-premises data center. Each connection goes into a separate Direct Connect location in Europe for high availability. These two locations are named DX-A and DX-B, respectively. Each Region has a single AWS Transit Gateway that is configured to route all inter-VPC traffic within that Region. Which solution will meet these requirements?
Select one answer.
Marked answer: D
Community Discussion
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Chose D1
Use Transit VIFs from each Direct Connect link to connect to a single Direct Connect Gateway. Associate both Transit Gateways (in eu-west-1 and us-east-1) with the DXGW to allow on-premises traffic to reach both Regions. Then, peer the Transit Gateways to enable inter-region VPC traffic. This setup uses managed services, supports high availability (via two DXs), and enables full cross-region and hybrid connectivity.
Chose C2
While transit gateway peering can enable cross-Region VPC communication, it is not necessary when you are using a Direct Connect gateway. A Direct Connect gateway already provides the capability to route traffic across multiple Regions without needing to peer the transit gateways directly.
1
D. Create a transit VIF from the DX-A connection into a Direct Connect gateway. Create a transit VIF from the DX-B connection into the same Direct Connect gateway for high availability. Associate both the eu-west-1 and us-east-1 transit gateways with this Direct Connect gateway. Peer the transit gateways with each other to support cross-Region routing.
