ANS-C01 Network Implementation Practice Question
A company is setting up a site-to-site VPN connection between an on-premises network and AWS. Which TWO components are required for the VPN connection?
⚠ Common exam trap
The ANS-C01 exam often tests the misconception that the VPN connection resource itself is a required component, but it is actually the logical configuration object that links the two endpoints, not a physical or virtual endpoint required for the VPN to function.
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
✓
Customer gateway
A customer gateway is required as the on-premises side endpoint for the site-to-site VPN, representing the physical or software VPN device on the customer network. A virtual private gateway is required as the AWS-side VPN concentrator that terminates the VPN tunnels and routes traffic from the VPC to the on-premises network. Together, they form the two mandatory endpoints for establishing IPsec VPN tunnels over the internet.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Customer gateway
Why this is correct
Represents the on-premises router.
- ✗
Transit gateway
Why it's wrong here
Optional, not required.
- ✓
Virtual private gateway
Why this is correct
Required for AWS side of VPN.
- ✗
VPN connection
Why it's wrong here
This is the resource itself, not a component.
- ✗
Direct Connect connection
Why it's wrong here
Not required for VPN.
Quick reference
VPN Protocol Comparison
| Protocol | Port | Encryption | Authentication | Use Case |
|---|---|---|---|---|
| IKEv2 / IPsec | UDP 500 / 4500 | AES-256 | Certificates / PSK | Site-to-site & remote access |
| SSL / TLS VPN | TCP 443 | TLS 1.3 | Certificates / MFA | Clientless remote access |
| L2TP / IPsec | UDP 1701 | AES (IPsec) | PSK / Certificates | Legacy remote access |
| WireGuard | UDP 51820 | ChaCha20 | Public keys | Modern high-performance VPN |
| PPTP | TCP 1723 | MPPE (weak) | MS-CHAPv2 | Legacy — avoid in production |
PPTP is considered insecure. IKEv2/IPsec and SSL VPN are the current recommended options.
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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.