ANS-C01 Network Security, Compliance and Governance Practice Question
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 is designing a network security architecture for a multi-account environment using AWS Transit Gateway. The company requires that all traffic between VPCs must be inspected by a centralized security appliance in a shared services VPC. The security appliance must receive traffic for both directions (ingress and egress). Which THREE components are required to achieve this? (Choose THREE.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A shared services VPC containing the security appliances.
Option A is correct because the shared services VPC hosts the centralized security appliances (e.g., firewalls, intrusion detection systems) that must inspect all inter-VPC traffic. This VPC acts as a hub for traffic inspection, ensuring that both ingress and egress traffic flows through the appliances before reaching its destination.
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.
✓
A shared services VPC containing the security appliances.
Why this is correct
Centralized inspection point.
Related concept
Read the scenario before looking for a memorised answer.
✓
VPC attachments to the Transit Gateway for each VPC.
Why this is correct
Required for connectivity.
Related concept
Read the scenario before looking for a memorised answer.
✗
VPC peering connections between each spoke VPC and the shared services VPC.
Why it's wrong here
VPC peering does not support transitive routing.
✓
Transit Gateway route tables that route traffic between VPCs through the security appliances.
Why this is correct
Enforces inspection.
Related concept
Read the scenario before looking for a memorised answer.
✗
NAT gateways in each spoke VPC for outbound traffic.
Why it's wrong here
Not required for inter-VPC inspection.
Common exam traps
Common exam trap: answer the scenario, not the keyword
AWS often tests the misconception that VPC peering can be used for transitive routing in a hub-and-spoke model, but the trap here is that VPC peering does not support transitive routing, so it cannot replace Transit Gateway attachments for centralized inspection.
Detailed technical explanation
How to think about this question
AWS Transit Gateway uses route tables to control traffic flow between VPC attachments. By creating a route table that points all inter-VPC traffic (e.g., 10.0.0.0/8) to the shared services VPC attachment, and then configuring the security appliance to forward traffic back to the Transit Gateway, you achieve asymmetric routing that must be carefully managed to avoid packet drops. In practice, the security appliance must be configured with static routes or use a virtual router (e.g., Cisco CSR) to handle the return traffic, and the Transit Gateway route tables must be designed to prevent routing loops.
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.
TExam Day Tips
→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 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
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: A shared services VPC containing the security appliances. — Option A is correct because the shared services VPC hosts the centralized security appliances (e.g., firewalls, intrusion detection systems) that must inspect all inter-VPC traffic. This VPC acts as a hub for traffic inspection, ensuring that both ingress and egress traffic flows through the appliances before reaching its destination.
What should I do if I get this ANS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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