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AWS Certified Advanced Networking - Specialty · AWS
Select 2 answers.
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B: Direct association of TGW-B with Direct Connect gateway → direct, simplest path. D: Inter-region peering → allows traffic to flow via TGW-A if needed (additional path, supports multi-account, cross-region). Note: Option B is simpler operationally if Direct Connect gateway supports multiple TGWs in the same region/account scope; Option D adds inter-region resilience.
TGW is a regional resource therefore without a direct connect gateway you can't attach/associate the TGW to the transit vif. Hence the janky the peering being the way.
only B is require. Why even need D as question does not ask connectivity between both the VPCs