CV0-004 Security Practice Question
A cloud architect needs to ensure that all data transmitted between an on-premises data center and a cloud VPC is encrypted. Which solution should be implemented?
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
✓
VPN Gateway
A VPN connection encrypts traffic in transit using IPsec tunnels.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Security group
Why it's wrong here
Security groups control traffic flow but do not encrypt data.
- ✗
Cloud KMS
Why it's wrong here
KMS manages encryption keys for data at rest, not in transit.
- ✗
Direct Connect
Why it's wrong here
Direct Connect provides a dedicated private connection but does not encrypt traffic by default.
- ✓
VPN Gateway
Why this is correct
VPN Gateway creates an encrypted tunnel over the internet.
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 CV0-004 practice question is part of Courseiva's free CompTIA 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 CV0-004 exam.