ANS-C01 Network Design Practice Question
A company wants to connect multiple VPCs across different AWS Regions using AWS Transit Gateway. Which feature allows the VPCs to communicate with each other using private IP addresses without creating peering connections?
⚠ Common exam trap
Many candidates confuse Transit Gateway inter-Region peering with VPC Peering, assuming VPC Peering is the only way to connect VPCs across regions, but Transit Gateway provides a scalable, centralized alternative without the need for full-mesh peering.
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
✓
Transit Gateway inter-Region peering
Transit Gateway inter-Region peering allows VPCs in different AWS Regions to communicate using private IP addresses through a central Transit Gateway, without requiring individual VPC peering connections. This feature uses the AWS global network to route traffic between peered Transit Gateways, enabling cross-region connectivity with a hub-and-spoke architecture.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS Direct Connect gateway
Why it's wrong here
Direct Connect gateway connects on-premises to VPCs, not VPC-to-VPC across Regions.
- ✗
AWS PrivateLink
Why it's wrong here
PrivateLink is used to access services privately, not for VPC-to-VPC routing.
- ✓
Transit Gateway inter-Region peering
Why this is correct
Transit Gateway supports inter-Region peering for transitive routing between VPCs across Regions.
- ✗
VPC Peering
Why it's wrong here
VPC Peering requires individual peering connections between each VPC pair.
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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.