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Exam AWS Certified Advanced Networking - Specialty ANS-C01 topic 1 question 176 discussion

Exam question from Amazon's AWS Certified Advanced Networking - Specialty ANS-C01
Question #: 176
Topic #: 1
[All AWS Certified Advanced Networking - Specialty ANS-C01 Questions]

A company has agreed to collaborate with a partner for a research project. The company has multiple VPCs in the us-east-1 Region that use CIDR blocks within 10.10.0.0/16. The VPCs are connected by a transit gateway that is named TGW-C in us-east-1. TGW-C has an Autonomous System Number (ASN) configuration value of 64520.

The partner has multiple VPCs in us-east-1 that use CIDR blocks within 172.16.0.0/16. The VPCs are connected by a transit gateway that is named TGW-P in us-east-1. TGW-P has an ASN configuration value of 64530.

A network engineer needs to establish network connectivity between the company's VPCs and the partner's VPCs in us-east-1.

Which solution will meet these requirements with MINIMUM changes to both networks?

  • A. Create a new VPC in a new account. Deploy a router from AWS Marketplace. Share TGW-C and TGW-P with the new account by using AWS Resource Access Manager (AWS RAM). Associate TGW-C and TGW-P with the new VPC. Configure the router in the new VPC to route between TGW-C and TGW-P.
  • B. Create an IPsec VPN connection between TGW-C and TGW-P. Configure the routing between the transit gateways to use the IPsec VPN connection.
  • C. Configure a cross-account transit gateway peering attachment between TGW-C and TGW-P. Configure the routing between the transit gateways to use the peering attachment.
  • D. Share TGW-C with the partner account by using AWS Resource Access Manager (AWS RAM). Associate the partner VPCs with TGW-C. Configure routing in the partner VPCs and TGW-C.
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Suggested Answer: C 🗳️
by psou7 at March 21, 2024, 12:23 a.m.
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psou7
Highly Voted 9 months ago
I vote for C https://repost.aws/questions/QUbU0rsbkYTPKWHqYT0nIAEA/transit-gateway-peering-cross-accounts-not-sharing-payer-id
upvoted 5 times
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Spaurito
Most Recent 1 month, 1 week ago
C - You can peer into an opt-in Region as long as the account that accepts the peering attachment has opted into that Region.
upvoted 1 times
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Spaurito
1 month, 2 weeks ago
C - The task is to establish connectivity between the 2 companies and their VPC's. Option D - Although you could use (RAM), it doesn't define they would be sharing resources.
upvoted 1 times
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cas_tori
3 months, 2 weeks ago
Selected Answer: C
this is C
upvoted 1 times
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amamatsumoto9
3 months, 3 weeks ago
I think it's D. Because transit gateways are not normally peered within a region, but rather peered across regions.
upvoted 1 times
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rdiaz
6 months, 1 week ago
Selected Answer: C
c transit gw cross account sharing
upvoted 2 times
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