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Exam AWS Certified Advanced Networking - Specialty ANS-C01 topic 1 question 264 discussion

Exam question from Amazon's AWS Certified Advanced Networking - Specialty ANS-C01
Question #: 264
Topic #: 1
[All AWS Certified Advanced Networking - Specialty ANS-C01 Questions]

A company has two teams: Team A and Team B. Team A has VPCs that run in Account A. The team uses a transit gateway (TGW-A) to route traffic between workloads that run in the different VPCs. Similarly, Team В has VPCs that run in Account B. Team В uses a different transit gateway (TGW-B) to route traffic between workloads that run in the different VPCs.

The company's network team manages the routing for Team A and Team В. The network team wants to retire TGW-B and use a single transit gateway to manage routing for the VPCs of both teams.

Which solution will meet this requirement with the LEAST operational overhead?

  • A. Create a resource share for TGW-A Share TGW-A with Account B. Create VPC attachments for the VPCs in Account В. Configure routing for the VPCs in TGW-A route tables. Update the route tables of the VPCs in Account В to forward traffic to TGW-Delete TGW-B attachments and TGW-B.
  • B. Create a resource share for TGW-A. Share TGW-A with Account В. Replicate the TGW-B configuration to TGW-A to automatically start routing changes for the VPCs in Account В. Delete TGW-B when routing changes are complete.
  • C. Create a new transit gateway (TGW-C) in Account A. Create a resource share for TGW-Share TGW-C with Account B. Create VPC attachments for the VPCs in Account A and Account В. Configure routing for all the VPCs in TGW-C route tables. Update the route tables for the VPCs in Account A and Account В to forward traffic to TGW-Delete TGW-A attachments and TGW-B attachments. Delete TGW-A and TGW-B.
  • D. Create a new transit gateway (TGW-C) in a new account (Account C). Create a resource share for TGW-C. Share TGW-C with Account A and Account B. Create VPC attachments for the VPCs in Account A and Account В. Configure routing for all the VPCs in TGW-C route tables. Update the route tables for the VPCs in Account A and Account В to forward traffic to TGW-C. Delete TGW-A attachments and TGW-B attachments. Delete TGW-A and TGW-B.
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Suggested Answer: A 🗳️
by ashk123456 at April 1, 2025, 9:55 a.m.
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ashk123456
1 month ago
Selected Answer: A
1. Resource Sharing with AWS RAM: • AWS Resource Access Manager (RAM) allows TGW-A to be shared with Account B, enabling Team B’s VPCs to attach to it. 2. Reusing TGW-A: • Since TGW-A is already handling routing, adding Account B’s VPCs is straightforward. 3. Simple Routing Updates: • Account B’s VPCs just need to update their route tables to forward traffic through TGW-A. 4. Retirement of TGW-B: • Once Team B’s VPCs are fully connected to TGW-A, TGW-B can be safely decommissioned.
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