ANS-C01 Network Management and Operations Practice Question
A network engineer is configuring a Site-to-Site VPN connection between an on-premises network and AWS. The engineer wants to ensure high availability by using two tunnels. Which two components must be configured to achieve this? (Choose TWO.)
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
✓
A virtual private gateway with two BGP sessions
For high availability with two tunnels in an AWS Site-to-Site VPN, a single VPN connection provides two tunnels by default, terminating on two different AWS endpoints. This requires only one customer gateway with a single public IP address. The virtual private gateway must be configured with two BGP sessions (one per tunnel) to support dynamic routing and automatic failover. Option C is incorrect because two customer gateways are unnecessary; one customer gateway with one IP suffices. Option D is incorrect because two VPN connections are not required—a single VPN connection already provides two tunnels. Option A is incorrect because a customer gateway cannot have two IP addresses. Option B is incorrect because an AWS Transit Gateway is optional and not required for a basic HA VPN setup.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A single customer gateway with two IP addresses
Why it's wrong here
AWS does not support multiple IPs on one customer gateway.
- ✗
An AWS Transit Gateway
Why it's wrong here
Transit Gateway is optional.
- ✗
Two customer gateways, each with a unique public IP address
Why it's wrong here
Each tunnel requires a separate customer gateway.
- ✗
Two VPN connections
Why it's wrong here
One VPN connection can provide two tunnels.
- ✓
A virtual private gateway with two BGP sessions
Why this is correct
Two BGP sessions for two tunnels.
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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.