ANS-C01 Network Design Practice Question
A company is using AWS Organizations to manage multiple accounts. The network team needs to allow a centralized inspection VPC to inspect all traffic between VPCs in different accounts. Which AWS service should be used to route traffic through the inspection VPC?
⚠ Common exam trap
It's easy for candidates to confuse VPC peering's ability to connect VPCs with the need for transitive routing, mistakenly thinking they can chain multiple peering connections to route traffic through an inspection VPC, but VPC peering explicitly does not support transitive routing.
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
✓
AWS Transit Gateway
AWS Transit Gateway acts as a central hub for inter-VPC and inter-account traffic, enabling you to attach VPCs from multiple AWS accounts (via AWS Organizations) and route traffic through a centralized inspection VPC. By using Transit Gateway route tables and a dedicated inspection VPC with appliances (e.g., firewall), you can enforce traffic inspection for all cross-account VPC communications without requiring individual peering connections.
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 Transit Gateway
Why this is correct
Transit Gateway supports transitive routing and central inspection.
- ✗
VPC peering connections
Why it's wrong here
VPC peering does not support transitive routing.
- ✗
AWS PrivateLink
Why it's wrong here
PrivateLink is for service access, not traffic routing.
- ✗
AWS Site-to-Site VPN
Why it's wrong here
VPN is for on-premises connectivity.
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JA
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.