- A
Establish a VPN connection between the VPCs over the peering connection.
Why wrong: VPN over peering is not a supported configuration.
- B
No additional action is required; all traffic over VPC peering is automatically encrypted.
AWS encrypts all traffic within the AWS network.
- C
Implement application-level encryption such as TLS.
Why wrong: While this would work, it is not necessary because the physical network is already encrypted.
- D
Use AWS Transit Gateway with VPN attachments between VPCs.
Why wrong: Transit Gateway does not add encryption for inter-VPC traffic beyond what peering provides.
Question 570 of 1,705
ANS-C01 Network Security, Compliance and Governance Practice Question
This ANS-C01 practice question tests your understanding of network security, compliance and governance. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 network engineer needs to ensure that all traffic between two VPCs (VPC A and VPC B) is encrypted in transit. The VPCs are in the same region and are connected via a VPC peering connection. What should the engineer do?
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
✓
No additional action is required; all traffic over VPC peering is automatically encrypted.
Option B is correct because VPC peering traffic within the same AWS region is automatically encrypted at the physical layer by AWS, ensuring data in transit is encrypted without additional configuration. Option A is incorrect because VPN over VPC peering is not supported and unnecessary. Option C is incorrect while application-level encryption like TLS can be added for extra security, it is not required as the traffic is already encrypted. Option D is incorrect because AWS Transit Gateway with VPN attachments adds unnecessary complexity and cost when VPC peering already provides encrypted connectivity.
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.
- ✗
Establish a VPN connection between the VPCs over the peering connection.
Why it's wrong here
VPN over peering is not a supported configuration.
- ✓
No additional action is required; all traffic over VPC peering is automatically encrypted.
Why this is correct
AWS encrypts all traffic within the AWS network.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Implement application-level encryption such as TLS.
Why it's wrong here
While this would work, it is not necessary because the physical network is already encrypted.
- ✗
Use AWS Transit Gateway with VPN attachments between VPCs.
Why it's wrong here
Transit Gateway does not add encryption for inter-VPC traffic beyond what peering provides.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Quick reference
OSI Model Reference
| Layer | Name | PDU | Key Protocols / Devices |
|---|---|---|---|
| 7 | Application | Data | HTTP, HTTPS, DNS, SMTP, FTP, SSH |
| 6 | Presentation | Data | TLS / SSL, JPEG, ASCII encoding |
| 5 | Session | Data | NetBIOS, RPC, SIP |
| 4 | Transport | Segment / Datagram | TCP, UDP |
| 3 | Network | Packet | IP, ICMP, OSPF — Routers |
| 2 | Data Link | Frame | Ethernet, Wi-Fi, PPP — Switches, Bridges |
| 1 | Physical | Bits | Cables, NICs, Hubs, Repeaters |
What to study next
Got this wrong? Here's your next step.
Identify which ANS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Network Security, Compliance and Governance — study guide chapter
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Security, Compliance and Governance — This question tests Network Security, Compliance and Governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: No additional action is required; all traffic over VPC peering is automatically encrypted. — Option B is correct because VPC peering traffic within the same AWS region is automatically encrypted at the physical layer by AWS, ensuring data in transit is encrypted without additional configuration. Option A is incorrect because VPN over VPC peering is not supported and unnecessary. Option C is incorrect while application-level encryption like TLS can be added for extra security, it is not required as the traffic is already encrypted. Option D is incorrect because AWS Transit Gateway with VPN attachments adds unnecessary complexity and cost when VPC peering already provides encrypted connectivity.
What should I do if I get this ANS-C01 question wrong?
Identify which ANS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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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