ANS-C01 Network Design Practice Question
A company has multiple VPCs across different AWS Regions and wants to enable communication between them using AWS's global network backbone. Which solution meets these requirements with minimal operational overhead?
⚠ Common exam trap
AWS often tests the misconception that VPC peering is the simplest solution for multi-VPC connectivity, but the trap here is that VPC peering lacks transitive routing and requires a full mesh for more than two VPCs, making it operationally heavy for multi-region setups, whereas Transit Gateway with inter-Region peering provides a scalable, centrally managed alternative.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Transit Gateway with inter-Region peering.
AWS Transit Gateway with inter-Region peering is correct because it allows you to connect multiple VPCs across different AWS Regions using AWS's global network backbone, providing a hub-and-spoke architecture that scales easily. This solution minimizes operational overhead by centralizing routing and eliminating the need to manage individual connections between each VPC, as Transit Gateway automatically handles route propagation and traffic distribution across peered transit gateways.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use AWS Transit Gateway with inter-Region peering.
Why this is correct
Simplifies connectivity across Regions.
- ✗
Set up AWS Direct Connect connections to each VPC.
Why it's wrong here
Direct Connect is not for VPC-to-VPC.
- ✗
Create VPC peering connections between each pair of VPCs.
Why it's wrong here
Complex and not scalable.
- ✗
Use AWS Site-to-Site VPN between VPCs.
Why it's wrong here
VPN is not optimal for inter-Region.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ANS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ANS-C01 exam.