ANS-C01 Network Management and Operations Practice Question
This ANS-C01 practice question tests your understanding of network management and operations. 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 company has a multi-VPC architecture using AWS Transit Gateway (TGW). They have a central inspection VPC with a Gateway Load Balancer (GWLB) and third-party firewall appliances. All other VPCs are attached to the TGW and have route tables that send traffic to the inspection VPC for inspection. Recently, the network team deployed a new VPC (VPC-D) and attached it to the TGW. They configured the VPC-D route table to send all inter-VPC traffic to the TGW. However, traffic from VPC-D to other VPCs is not being inspected. The team confirmed that the firewall appliances are healthy and the GWLB is correctly configured. Which action should the network team take to ensure traffic from VPC-D is inspected?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Associate VPC-D's TGW attachment with the correct TGW route table that routes traffic to the inspection VPC.
Each VPC attached to TGW has a TGW route table that controls how traffic is forwarded. To send traffic from VPC-D through the inspection VPC, the TGW route table associated with VPC-D's attachment must have routes that point to the inspection VPC's attachment. Simply attaching the VPC does not automatically associate it with the correct TGW route table. Option B is correct because it ensures that the TGW route table used by VPC-D directs traffic to the inspection VPC.
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.
✗
Enable route propagation on VPC-D's TGW attachment.
Why it's wrong here
Route propagation is for VPN attachments, not VPC attachments.
✗
Add a route in VPC-D's subnet route tables pointing to the TGW for all traffic.
Why it's wrong here
VPC-D already has a route to TGW; the issue is in the TGW route table, not the VPC route table.
✗
Create a new TGW route table and associate all VPC attachments to it.
Why it's wrong here
This does not specifically direct traffic through inspection.
✓
Associate VPC-D's TGW attachment with the correct TGW route table that routes traffic to the inspection VPC.
Why this is correct
This ensures TGW forwards traffic from VPC-D through the inspection VPC.
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.
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.
Network Management and Operations — This question tests Network Management and Operations — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Associate VPC-D's TGW attachment with the correct TGW route table that routes traffic to the inspection VPC. — Each VPC attached to TGW has a TGW route table that controls how traffic is forwarded. To send traffic from VPC-D through the inspection VPC, the TGW route table associated with VPC-D's attachment must have routes that point to the inspection VPC's attachment. Simply attaching the VPC does not automatically associate it with the correct TGW route table. Option B is correct because it ensures that the TGW route table used by VPC-D directs traffic to the inspection VPC.
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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