The answer is to use Amazon CloudWatch metrics for the VPN tunnels, as they directly expose bandwidth utilization data for each tunnel without additional configuration. CloudWatch automatically collects metrics like TunnelDataIn and TunnelDataOut, providing the precise throughput needed for monitoring VPN bandwidth utilization across multiple VPCs connected via a transit gateway. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this question tests your ability to distinguish between monitoring services: VPC Flow Logs capture packet-level metadata but not aggregate bandwidth metrics, while AWS Config and Transit Gateway Network Manager focus on configuration compliance and network topology, respectively. A common trap is reaching for Flow Logs because they seem network-focused, but remember that CloudWatch is the native metrics service for VPN tunnel performance. Memory tip: “Metrics for meters, logs for packets”—CloudWatch gives you the bandwidth meter, Flow Logs give you the packet-level story.
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 manages multiple VPCs connected via a transit gateway. Each VPC has a VPN connection to an on-premises data center. The network team wants to monitor the bandwidth utilization on each VPN connection. Which approach is the most efficient?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Amazon CloudWatch metrics for the VPN tunnels.
Option A is correct because CloudWatch metrics for VPN tunnels provide bandwidth utilization. Option B is wrong because VPC Flow Logs are for packet-level logs, not metrics. Option C is wrong because AWS Config tracks configuration. Option D is wrong because Transit Gateway Network Manager provides topology, not bandwidth metrics.
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.
✓
Use Amazon CloudWatch metrics for the VPN tunnels.
Why this is correct
CloudWatch provides built-in metrics for VPN tunnel throughput.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable VPC Flow Logs on each VPC and aggregate them in CloudWatch Logs Insights.
Why it's wrong here
Flow Logs are for logs, not direct bandwidth metrics.
✗
Use Transit Gateway Network Manager to view VPN bandwidth.
Why it's wrong here
Network Manager shows topology, not metrics.
✗
Use AWS Config rules to monitor VPN bandwidth changes.
Why it's wrong here
Config monitors configuration changes, not performance.
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.
Trap categories for this question
Command / output trap
Network Manager shows topology, not metrics.
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 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 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.
Network Management and Operations — This question tests Network Management and Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Amazon CloudWatch metrics for the VPN tunnels. — Option A is correct because CloudWatch metrics for VPN tunnels provide bandwidth utilization. Option B is wrong because VPC Flow Logs are for packet-level logs, not metrics. Option C is wrong because AWS Config tracks configuration. Option D is wrong because Transit Gateway Network Manager provides topology, not bandwidth metrics.
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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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.
Question Discussion
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