ANS-C01 Network Security, Compliance and Governance Practice Question
A company is using AWS Transit Gateway to interconnect multiple VPCs and on-premises networks. They need to ensure that traffic between VPCs is encrypted in transit. They also want to minimize changes to existing VPC route tables. Which solution should they 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
✓
Use a transit VPC architecture with EC2-based VPN appliances in a security VPC that encrypt traffic between VPCs.
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 a transit VPC architecture with EC2-based VPN appliances in a security VPC that encrypt traffic between VPCs.
Why this is correct
EC2 VPN appliances (e.g., using IPsec) can be deployed in a security VPC to encrypt traffic between VPCs. Traffic is routed through the Transit Gateway to the security VPC, then encrypted and forwarded.
- ✗
Enable Transit Gateway VPN attachments between each VPC and the Transit Gateway with IPsec VPN.
Why it's wrong here
VPN attachments are for connecting external networks, not VPCs. VPC attachments to Transit Gateway do not support encryption natively.
- ✗
Use AWS Network Firewall to inspect and encrypt traffic between VPCs.
Why it's wrong here
Network Firewall does not provide encryption; it provides stateful inspection.
- ✗
Implement VPC peering with encryption enabled.
Why it's wrong here
VPC peering does not provide encryption; traffic is within AWS backbone and not encrypted by default.
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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.