Exam AWS Certified Solutions Architect - Professional topic 1 question 832 discussion

B correct https://docs.aws.amazon.com/whitepapers/latest/building-scalable-secure-multi-vpc-network-infrastructure/centralized-egress-to-internet.html

Option A (creating peering connections): Peering connections allow connectivity between VPCs but do not provide the ability to route internet traffic through a central egress VPC. Option B (creating a transit gateway): This is the correct approach for implementing a hub-and-spoke design. By creating a transit gateway and sharing it with the existing AWS accounts, the spoke VPCs can be attached to the transit gateway. Routing can be configured to direct all internet-bound traffic from the spoke VPCs to the egress VPC with the NAT gateway. Option C (creating a transit gateway in every account): While it is possible to create a transit gateway in every account, it would result in unnecessary complexity and management overhead. It is more efficient to have a single transit gateway shared across accounts. Option D (creating an AWS PrivateLink connection): AWS PrivateLink is used for private connectivity between VPCs and AWS services, and it does not provide the ability to route internet traffic through an egress VPC.

B, Architecture diagram with sequence number for outbound flow (via egress vpc) - https://d1.awsstatic.com/architecture-diagrams/ArchitectureDiagrams/NAT-gateway-centralized-egress-ra.pdf?did=wp_card&trk=wp_card

B. Yes is correct ans

B is the only correct one since peering is limited to 125

it's B