ANS-C01 Network Implementation Practice Question
A company is setting up a new AWS account and wants to centrally manage VPC network traffic inspection across multiple accounts using a central VPC. The company uses AWS Organizations. Which architecture meets these requirements?
⚠ Common exam trap
The ANS-C01 exam often tests the misconception that VPC peering can be used for transitive routing (i.e., routing traffic through a third VPC), but VPC peering is non-transitive and cannot forward traffic between two peered VPCs via a central VPC.
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 a central inspection VPC that has firewall appliances.
AWS Transit Gateway acts as a hub-and-spoke router, enabling centralized network traffic inspection by routing inter-VPC and VPN traffic through a central inspection VPC that hosts firewall appliances (e.g., third-party NGFWs or AWS Network Firewall). This architecture scales across multiple accounts in AWS Organizations using resource sharing via AWS Resource Access Manager, and it supports granular route tables to force traffic through the inspection VPC without requiring peering mesh or single points of failure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create VPC peering connections between each account's VPC and the central VPC.
Why it's wrong here
Peering does not enable centralized inspection; traffic flows directly.
- ✓
Use AWS Transit Gateway with a central inspection VPC that has firewall appliances.
Why this is correct
TGW enables hub-and-spoke architecture with inspection.
- ✗
Use VPC endpoints to route traffic to the central VPC.
Why it's wrong here
VPC endpoints are for accessing services, not routing inter-VPC traffic.
- ✗
Deploy a Network Load Balancer in each VPC and route traffic through it.
Why it's wrong here
NLB does not inspect traffic.
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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.