PAS-C01 Technology Practice Question
A company is migrating an SAP ERP system to AWS and needs to connect on-premises users to the SAP application securely. The SAP application is deployed in a VPC private subnet. Which service should be used to provide secure access for remote users?
⚠ Common exam trap
It's easy for candidates to confuse network-to-network connectivity solutions (Site-to-Site VPN, Direct Connect) with user-to-network remote access (Client VPN), leading candidates to choose a site-to-site option when the requirement is for individual remote users.
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 service that allows remote users to securely connect to AWS resources using OpenVPN-based VPN clients. Since the SAP application is in a private subnet, remote users need individual encrypted tunnels to access it, which Client VPN provides by authenticating users and routing traffic through a VPC endpoint.
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 entire networks, not individual users.
- ✗
AWS Transit Gateway
Why it's wrong here
Transit Gateway is a network transit hub, not a remote access solution.
- ✗
AWS Direct Connect
Why it's wrong here
Direct Connect is for dedicated, high-bandwidth connections, not individual remote users.
- ✓
AWS Client VPN
Why this is correct
Client VPN allows remote users to securely connect to the VPC.
Visual reference
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 PAS-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 PAS-C01 exam.