ExpertHard1 markMultiple Choice
AWS SAP-C02 · Question 01 · Domain 1.1: Network Connectivity
An enterprise has 50 VPCs across two AWS Regions. They need to establish transitive routing between all VPCs and their on-premises data center via a single AWS Direct Connect connection. Which architecture provides the MOST scalable solution?
An enterprise has 50 VPCs across two AWS Regions. They need to establish transitive routing between all VPCs and their on-premises data center via a single AWS Direct Connect connection. Which architecture provides the MOST scalable solution?
Answer options:
A.
Create VPC peering connections between all 50 VPCs and use a VPN for on-premises.
B.
Use AWS Transit Gateway in each region, peer them, and connect the Direct Connect gateway to the Transit Gateways.
C.
Deploy a fleet of EC2 instances running strongSwan to act as a central hub.
D.
Connect all VPCs directly to the Direct Connect gateway using private virtual interfaces.
How to approach this question
Identify the need for transitive routing at scale, which points to Transit Gateway.
Full Answer
B.Use AWS Transit Gateway in each region, peer them, and connect the Direct Connect gateway to the Transit Gateways.✓ Correct
AWS Transit Gateway acts as a highly scalable hub for routing traffic between VPCs and on-premises networks.
Common mistakes
Selecting VPC peering, which lacks transitive routing capabilities.
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