ANS-C01 Network Design Practice Question
A company is using AWS Transit Gateway to connect multiple VPCs and on-premises data centers. They want to centralize internet traffic through a single VPC that has an internet gateway. Which Transit Gateway feature should they enable?
⚠ Common exam trap
Many exam-takers confuse Transit Gateway route tables with VPC route tables, thinking that simply attaching an internet gateway to a VPC will automatically route traffic from other VPCs through it, without realizing that explicit route table entries in the Transit Gateway are required to direct traffic to the egress 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
✓
Transit Gateway route tables
To centralize internet traffic through a single VPC with an internet gateway, you need to control the routing of traffic from other VPCs and on-premises networks. Transit Gateway route tables allow you to isolate or share routes between attachments, enabling you to create a default route (0.0.0.0/0) pointing to the centralized VPC's attachment. This ensures all outbound internet traffic from other VPCs is forwarded to the egress VPC, which then uses its internet gateway.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Transit Gateway route tables
Why this is correct
Route tables allow you to centralize internet traffic through a specific VPC.
- ✗
VPN attachments
Why it's wrong here
VPN attachments are for on-premises connectivity.
- ✗
Multicast support
Why it's wrong here
Multicast is not for internet traffic centralization.
- ✗
IPsec acceleration
Why it's wrong here
IPsec acceleration is for VPN performance.
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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.