ANS-C01 Network Design Practice Question
A company has a Direct Connect connection with a private virtual interface (VIF) to a VPC. The company wants to use the same Direct Connect connection to access multiple VPCs in the same AWS Region. Which solution should the company implement?
⚠ Common exam trap
It's easy for candidates to assume you need a separate private virtual interface for each VPC, not realizing that a Direct Connect gateway with a transit VIF can aggregate multiple VPCs under a single physical connection, which is a key design pattern tested in the ANS-C01 exam.
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 a transit virtual interface on the Direct Connect connection and associate it with a Direct Connect gateway.
A transit virtual interface (VIF) on a Direct Connect connection can be associated with a Direct Connect gateway, which enables connectivity to multiple VPCs in the same AWS Region. The Direct Connect gateway acts as a hub, allowing the single physical connection to route traffic to multiple VPCs via the transit VIF, without needing separate private VIFs for each VPC.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a public virtual interface and route traffic through the internet.
Why it's wrong here
Public VIF is for public services, not private VPC access.
- ✓
Create a transit virtual interface on the Direct Connect connection and associate it with a Direct Connect gateway.
Why this is correct
Transit VIF enables connectivity to multiple VPCs via Transit Gateway.
- ✗
Request a hosted virtual interface from an AWS Direct Connect partner.
Why it's wrong here
Hosted VIF is still a private VIF tied to one VPC.
- ✗
Create additional private virtual interfaces for each VPC.
Why it's wrong here
Each private VIF is dedicated to a single VPC.
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Same concept, more angles
1 more way this is tested on ANS-C01
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company has a Direct Connect connection with a private virtual interface (VIF) to a VPC. The company wants to add a second VPC in the same AWS Region using the same Direct Connect connection. Which solution meets the requirements with the least operational effort?
hard- ✓ A.Create a Direct Connect gateway and associate both VPCs, then associate the private VIF with the Direct Connect gateway
- B.Set up a VPN connection over the Direct Connect for the second VPC
- C.Create a transit virtual interface and attach it to a transit gateway, then attach both VPCs
- D.Create a second private virtual interface for the second VPC
Why A: A Direct Connect gateway allows a single private virtual interface (VIF) to connect to multiple VPCs in the same AWS Region, eliminating the need for multiple VIFs or complex routing. By associating both VPCs with the Direct Connect gateway and attaching the private VIF to it, you achieve the goal with minimal operational overhead, as the gateway handles the routing between the on-premises network and the VPCs.
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.