- A
VPC peering connections
Why wrong: Not needed; Transit Gateway already handles inter-VPC routing.
- B
Direct Connect gateway
Provides connectivity to on-premises networks.
- C
Transit Gateway association to Direct Connect gateway
Associates the transit gateway with the Direct Connect gateway for routing.
- D
Transit Gateway route tables
Allow segmentation by creating separate route tables for different VPCs.
- E
Site-to-Site VPN connection
Why wrong: Not required if using Direct Connect; adds unnecessary complexity.
Question 772 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. 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 VPC with multiple subnets and uses AWS Transit Gateway to connect to on-premises via AWS Direct Connect. They want to implement network segmentation so that certain VPCs can only communicate with specific on-premises networks. Which THREE components should they use? (Choose THREE.)
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
✓
Direct Connect gateway
Options B, C, and D are correct. The Direct Connect gateway (B) integrates Direct Connect with Transit Gateway. The Transit Gateway association to the Direct Connect gateway (C) enables routing between VPCs and on-premises networks. Transit Gateway route tables (D) allow separate routing domains to segment traffic. Option A (VPC peering) is not needed because Transit Gateway already handles inter-VPC routing. Option E (Site-to-Site VPN) is not required when using Direct Connect for connectivity.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
VPC peering connections
Why it's wrong here
Not needed; Transit Gateway already handles inter-VPC routing.
- ✓
Direct Connect gateway
Why this is correct
Provides connectivity to on-premises networks.
Related concept
CIDR notation defines the prefix length.
- ✓
Transit Gateway association to Direct Connect gateway
- ✓
Transit Gateway route tables
Why this is correct
Allow segmentation by creating separate route tables for different VPCs.
Related concept
CIDR notation defines the prefix length.
- ✗
Site-to-Site VPN connection
Why it's wrong here
Not required if using Direct Connect; adds unnecessary complexity.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Visual reference
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related ANS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
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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 — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Direct Connect gateway — Options B, C, and D are correct. The Direct Connect gateway (B) integrates Direct Connect with Transit Gateway. The Transit Gateway association to the Direct Connect gateway (C) enables routing between VPCs and on-premises networks. Transit Gateway route tables (D) allow separate routing domains to segment traffic. Option A (VPC peering) is not needed because Transit Gateway already handles inter-VPC routing. Option E (Site-to-Site VPN) is not required when using Direct Connect for connectivity.
What should I do if I get this ANS-C01 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related ANS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Last reviewed: Jun 20, 2026
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