ANS-C01 Network Security, Compliance and Governance Practice Question
Which TWO of the following are valid ways to encrypt data in transit between an on-premises data center and an Amazon VPC? (Choose two.)
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
✓
Use AWS Site-to-Site VPN.
Options A and C are correct. AWS Site-to-Site VPN creates an IPSec tunnel, encrypting all traffic. AWS Direct Connect can be combined with a VPN over the connection to encrypt traffic. Option B is incorrect because Direct Connect alone does not provide encryption. Option D is incorrect because VPC peering does not encrypt traffic. Option E is incorrect because internet gateway does not encrypt traffic.
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 Site-to-Site VPN.
Why this is correct
Site-to-Site VPN uses IPSec to encrypt traffic between on-premises and VPC.
- ✗
Use AWS Direct Connect without any additional encryption.
Why it's wrong here
Direct Connect provides a private connection but does not encrypt traffic by default.
- ✓
Use AWS Direct Connect with a VPN tunnel over the connection.
Why this is correct
Adding a VPN over Direct Connect encrypts the traffic.
- ✗
Use VPC peering.
Why it's wrong here
VPC peering does not encrypt traffic.
- ✗
Use an internet gateway with a security group.
Why it's wrong here
Internet gateway and security groups do not encrypt traffic.
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.