This ANS-C01 practice question tests your understanding of network security, compliance and governance. 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 has a requirement to encrypt all data in transit between its on-premises network and AWS over a VPN connection. Which solution provides encryption in transit?
AWS Site-to-Site VPN
Uses IPsec to encrypt traffic between on-premises and AWS.
AWS Transit Gateway
Why wrong: A network transit hub, does not provide encryption itself.
VPC Peering
Why wrong: Connects VPCs but does not encrypt traffic.
AWS Direct Connect
Why wrong: Provides a private connection but does not encrypt traffic by default.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
AWS Site-to-Site VPN
Option A is correct because AWS Site-to-Site VPN uses IPsec tunnels to encrypt data in transit. Option B is wrong because Direct Connect does not natively encrypt traffic; encryption must be added at the application layer. Option C is wrong because VPC Peering does not encrypt traffic. Option D is wrong because Transit Gateway alone does not provide encryption.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
AWS Site-to-Site VPN
AWS Transit Gateway
Why it's wrong here
A network transit hub, does not provide encryption itself.
VPC Peering
Why it's wrong here
Connects VPCs but does not encrypt traffic.
AWS Direct Connect
Why it's wrong here
Provides a private connection but does not encrypt traffic by default.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related ANS-C01 NAT questions on configuration and troubleshooting.
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FAQ
Network Security, Compliance and Governance — This question tests Network Security, Compliance and Governance — Static NAT maps one inside address to one outside address..
The correct answer is: AWS Site-to-Site VPN — Option A is correct because AWS Site-to-Site VPN uses IPsec tunnels to encrypt data in transit. Option B is wrong because Direct Connect does not natively encrypt traffic; encryption must be added at the application layer. Option C is wrong because VPC Peering does not encrypt traffic. Option D is wrong because Transit Gateway alone does not provide encryption.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related ANS-C01 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
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.
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