ANS-C01 Network Design Practice Question
A company has an on-premises data center connected to AWS via a Site-to-Site VPN. The VPN connection uses BGP for dynamic routing. The company wants to add an additional VPN tunnel for redundancy. What must be configured?
⚠ Common exam trap
It's easy for candidates to assume you need a second virtual private gateway for redundancy, but AWS allows multiple VPN connections to the same VGW, so the correct approach is to add a second VPN connection with a separate customer gateway device.
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 second VPN connection to a second customer gateway device.
To add an additional VPN tunnel for redundancy, you must create a second VPN connection that uses a second customer gateway device. This provides a second BGP session and a separate tunnel, ensuring failover if the primary tunnel or customer gateway fails. The existing virtual private gateway can support multiple VPN connections, so no replacement or additional VGW is needed.
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 a second virtual private gateway and attach it to the VPC.
Why it's wrong here
A VPC can only have one virtual private gateway.
- ✗
Add a transit gateway to replace the virtual private gateway.
Why it's wrong here
Transit gateway is not required for redundancy.
- ✓
Create a second VPN connection to a second customer gateway device.
Why this is correct
Provides redundant tunnels.
- ✗
Configure static routes instead of BGP.
Why it's wrong here
Static routes do not provide dynamic failover.
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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.