ANS-C01 Network Implementation Practice Question
Which THREE of the following are required to establish a highly available site-to-site VPN connection between an on-premises network and an AWS VPC? (Choose three.)
⚠ Common exam trap
The ANS-C01 exam often tests the misconception that two separate VPN connections are needed for high availability, when in fact a single VPN connection with two tunnels is the correct AWS design.
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
✓
Two VPN tunnels (one primary, one secondary)
AWS Site-to-Site VPN requires two tunnels per VPN connection to provide high availability. Each tunnel uses separate endpoints and paths; if one tunnel fails, traffic automatically fails over to the other. This design ensures continuous connectivity even during maintenance or failures.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Two separate VPN connections
Why it's wrong here
A single VPN connection with two tunnels provides HA; two connections are not required.
- ✓
Two VPN tunnels (one primary, one secondary)
Why this is correct
Two tunnels provide redundancy.
- ✓
A customer gateway resource in AWS
Why this is correct
Customer gateway represents the on-premises device.
- ✓
A virtual private gateway attached to the VPC
Why this is correct
VGW is the AWS-side endpoint for the VPN.
- ✗
An AWS Direct Connect connection
Why it's wrong here
Direct Connect is not needed for VPN HA.
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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.