ANS-C01 Network Management and Operations Practice Question
A company is designing a multi-region architecture using AWS Transit Gateway inter-region peering. They need to ensure that traffic between VPCs in different regions can traverse the TGW peering attachment without being inspected by a central security appliance. Which configuration should be used?
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
✓
Create TGW peering attachments and configure the route tables to point to each other's TGW attachment.
TGW peering attachments allow traffic to bypass the central inspection VPC if routing is set up to go directly between TGWs. Option B is wrong because it forces inspection. Option C is wrong because VPN is not needed. Option D is wrong because VPC peering does not support transitive routing via TGW.
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 TGW peering attachments and configure the route tables to point to each other's TGW attachment.
Why this is correct
This allows direct traffic flow between TGWs, bypassing inspection.
- ✗
Route all inter-region traffic through a centralized inspection VPC in one region.
Why it's wrong here
This forces inspection, not bypass.
- ✗
Set up a VPN connection between the two TGWs for encrypted traffic.
Why it's wrong here
TGW peering already encrypts traffic; VPN adds complexity.
- ✗
Use VPC peering between the VPCs instead of TGW peering.
Why it's wrong here
VPC peering does not support transitive routing via TGW.
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Variation 1. A network engineer is designing a multi-region architecture using AWS Transit Gateway and wants to minimize inter-region latency for data transfer between VPCs. The application requires high throughput and low latency. Which design should be used?
hard- A.Establish VPC peering connections between all VPCs across regions
- B.Use AWS Site-to-Site VPN between Transit Gateways in each region
- C.Configure VPC endpoints to route traffic through AWS backbone
- ✓ D.Use Transit Gateway inter-region peering between Transit Gateways
Why D: Transit Gateway inter-region peering allows direct connectivity between Transit Gateways in different regions, using the AWS global backbone to minimize latency and maximize throughput. Option A (VPC peering) does not scale to multiple VPCs and regions. Option B (Site-to-Site VPN) introduces encryption overhead and potential latency. Option C (VPC endpoints) are for accessing AWS services, not for inter-VPC traffic. Therefore, Option D is the correct design for minimizing inter-region latency and achieving high throughput.
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.