- A
Bastion host in a public subnet
Why wrong: Bastion host does not enforce user-level policies.
- B
AWS Direct Connect
Why wrong: Direct Connect is a dedicated physical connection.
- C
AWS Site-to-Site VPN
Why wrong: Site-to-Site VPN is for network-to-network connectivity.
- D
AWS Client VPN
Client VPN provides per-user secure access to VPC.
Question 1,579 of 1,705
ANS-C01 Network Design Practice Question
This ANS-C01 practice question tests your understanding of network design. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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 allow its employees to securely access internal applications hosted in a VPC without traversing the internet. The company also wants to be able to enforce security policies at the user level. Which AWS service should the company use?
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 service that allows employees to securely access internal applications hosted in a VPC from any location without traversing the internet. It uses OpenVPN-based client software and integrates with AWS Identity and Access Management (IAM) and Active Directory to enforce security policies at the user level, such as group-based access controls and multi-factor authentication.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Bastion host in a public subnet
Why it's wrong here
Bastion host does not enforce user-level policies.
- ✗
AWS Direct Connect
Why it's wrong here
Direct Connect is a dedicated physical connection.
- ✗
AWS Site-to-Site VPN
Why it's wrong here
Site-to-Site VPN is for network-to-network connectivity.
- ✓
AWS Client VPN
Why this is correct
Client VPN provides per-user secure access to VPC.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse network-level connectivity services (Direct Connect, Site-to-Site VPN) with user-level remote access solutions, overlooking that only Client VPN provides per-user authentication and policy enforcement for individual employees.
Detailed technical explanation
How to think about this question
AWS Client VPN uses a mutual TLS (mTLS) authentication model where the client presents a certificate and the server validates it against a configured certificate authority (CA). It supports integration with AWS Certificate Manager (ACM) for certificate management and can route traffic based on authorization rules that map to IAM or Active Directory groups, allowing fine-grained access control per user or group. In a real-world scenario, an organization could use Client VPN to grant developers access to a staging environment while blocking access to production, all enforced at the user level without any internet exposure.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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.
What to study next
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Design — This question tests Network Design — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Client VPN — AWS Client VPN is a managed, cloud-based VPN service that allows employees to securely access internal applications hosted in a VPC from any location without traversing the internet. It uses OpenVPN-based client software and integrates with AWS Identity and Access Management (IAM) and Active Directory to enforce security policies at the user level, such as group-based access controls and multi-factor authentication.
What should I do if I get this ANS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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