ANS-C01 Network Design Practice Question
A company wants to provide its employees with secure access to internal applications running on AWS without using a VPN. Which AWS service can be used?
⚠ Common exam trap
Many exam-takers confuse AWS Client VPN (a managed remote access VPN for individual users) with AWS Site-to-Site VPN (a site-to-site tunnel between networks), leading them to select Option A because they see 'VPN' in the question but miss the requirement for employee remote access without a VPN appliance.
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
✓
AWS Client VPN
AWS Client VPN is a managed, cloud-based VPN solution that allows employees to securely access AWS resources and internal applications from their devices using OpenVPN or IKEv2 protocols, without requiring a traditional site-to-site VPN or dedicated hardware. It provides per-user authentication via Active Directory, SAML, or mutual authentication, making it ideal for remote user access to internal applications without a VPN appliance on-premises.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS Site-to-Site VPN
Why it's wrong here
Site-to-Site VPN connects networks, not individual users.
- ✗
AWS Transit Gateway
Why it's wrong here
Transit Gateway is for connecting VPCs and VPNs.
- ✓
AWS Client VPN
Why this is correct
Client VPN provides secure access for individual users.
- ✗
AWS Direct Connect
Why it's wrong here
Direct Connect is for dedicated connections from data centers.
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.
Go deeper
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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.