- A
Use AWS Direct Connect with a private VIF and enable encryption on the connection.
Why wrong: Incorrect. AWS Direct Connect with a private VIF does not encrypt traffic natively; encryption would require an additional VPN overlay. Also, a single Direct Connect connection is not highly available because it has a single point of failure.
- B
Create a single VPN tunnel with a virtual private gateway and enable encryption.
Why wrong: Incorrect. A single VPN tunnel provides encryption but no high availability; if the tunnel or the on-premises device fails, connectivity is lost.
- C
Create two VPN tunnels to the same virtual private gateway for redundancy.
Correct. Creating two VPN tunnels to the same virtual private gateway provides redundancy for the tunnels. The virtual private gateway is a highly available service, so this design meets both encryption and high availability requirements.
- D
Create a VPN connection with two tunnels, each terminating on a different virtual private gateway in the same VPC.
Why wrong: Incorrect. A VPC can only have one virtual private gateway attached. You cannot create two virtual private gateways in the same VPC. The described design is not possible in AWS.
ANS-C01 Site-to-Site VPN Practice Question
This ANS-C01 practice question tests your understanding of network security, compliance and governance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: site-to-Site VPN. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company wants to securely connect an on-premises data center to a VPC using AWS Site-to-Site VPN. The security team requires that all traffic between the on-premises network and the VPC be encrypted and that the VPN tunnel be highly available. Which design BEST meets these requirements?
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 two VPN tunnels to the same virtual private gateway for redundancy.
Option A is incorrect because AWS Direct Connect with a private VIF does not inherently encrypt traffic; a VPN overlay would be required, and a single Direct Connect connection is not highly available. Option B is incorrect because a single VPN tunnel provides encryption but not high availability; if the tunnel fails, connectivity is lost. Option C is correct because a VPN connection with two tunnels to the same virtual private gateway provides redundancy for the tunnels, and the virtual private gateway is a highly available service within a region. Option D is incorrect because an AWS VPC can only have one virtual private gateway; you cannot attach two virtual private gateways to the same VPC. The recommended design for high availability is to use a single VPN connection with two tunnels (Option C) or multiple VPN connections to different VPCs.
Key principle: Site-to-Site VPN
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 AWS Direct Connect with a private VIF and enable encryption on the connection.
Why it's wrong here
Incorrect. AWS Direct Connect with a private VIF does not encrypt traffic natively; encryption would require an additional VPN overlay. Also, a single Direct Connect connection is not highly available because it has a single point of failure.
- ✗
Create a single VPN tunnel with a virtual private gateway and enable encryption.
Why it's wrong here
Incorrect. A single VPN tunnel provides encryption but no high availability; if the tunnel or the on-premises device fails, connectivity is lost.
- ✓
Create two VPN tunnels to the same virtual private gateway for redundancy.
- ✗
Create a VPN connection with two tunnels, each terminating on a different virtual private gateway in the same VPC.
Why it's wrong here
Incorrect. A VPC can only have one virtual private gateway attached. You cannot create two virtual private gateways in the same VPC. The described design is not possible in AWS.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Candidates may think that high availability requires multiple virtual private gateways, but AWS only allows one virtual private gateway per VPC. The correct approach is to use two tunnels to the same virtual private gateway for redundancy.
Detailed technical explanation
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Site-to-Site VPN
- Virtual Private Gateway
- High Availability
- VPN Tunnel
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Site-to-Site VPN
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Review site-to-Site VPN, then practise related ANS-C01 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Security, Compliance and Governance — This question tests Network Security, Compliance and Governance — Site-to-Site VPN.
What is the correct answer to this question?
The correct answer is: Create two VPN tunnels to the same virtual private gateway for redundancy. — Option A is incorrect because AWS Direct Connect with a private VIF does not inherently encrypt traffic; a VPN overlay would be required, and a single Direct Connect connection is not highly available. Option B is incorrect because a single VPN tunnel provides encryption but not high availability; if the tunnel fails, connectivity is lost. Option C is correct because a VPN connection with two tunnels to the same virtual private gateway provides redundancy for the tunnels, and the virtual private gateway is a highly available service within a region. Option D is incorrect because an AWS VPC can only have one virtual private gateway; you cannot attach two virtual private gateways to the same VPC. The recommended design for high availability is to use a single VPN connection with two tunnels (Option C) or multiple VPN connections to different VPCs.
What should I do if I get this ANS-C01 question wrong?
Review site-to-Site VPN, then practise related ANS-C01 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Site-to-Site VPN
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Last reviewed: Jun 20, 2026
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.
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