Quick Answer
The answer is Amazon CloudWatch metrics for VPN tunnels and CloudWatch Alarms. CloudWatch provides built-in VPN tunnel metrics, including the BGP session status as a 0 or 1 value, allowing you to monitor BGP status for VPN attachments in real time. By creating a CloudWatch Alarm on this metric, you can receive alerts immediately if a session goes down, which is essential for maintaining hybrid connectivity. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this question tests your understanding of which AWS services provide operational visibility into network layer protocols—a common trap is confusing VPC Flow Logs (which capture IP traffic metadata) or AWS Config (which tracks resource configuration) with real-time protocol monitoring. Remember that BGP is a control-plane protocol, so only CloudWatch’s tunnel-level metrics expose its state. Memory tip: think “BGP = Border Gateway Protocol, but also ‘Be Good with Pulse’—CloudWatch gives you the pulse of the BGP session.”
This ANS-C01 practice question tests your understanding of network management and operations. 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 using AWS Transit Gateway to connect multiple VPCs and on-premises networks via VPN. The network team needs to monitor the BGP session status for each VPN attachment. Which TWO services can be used to monitor BGP status and receive alerts if a session goes down?
Amazon CloudWatch Alarms on the BGP status metric.
Alarms can notify when BGP goes down.
AWS Config rules.
Why wrong: Config tracks configuration, not operational status.
VPC Flow Logs.
Why wrong: Flow Logs capture IP traffic, not BGP.
AWS CloudTrail logs.
Why wrong: CloudTrail logs API calls, not BGP.
Amazon CloudWatch metrics for VPN tunnels.
CloudWatch provides BGP status metrics.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon CloudWatch Alarms on the BGP status metric.
Options A and D are correct. CloudWatch can monitor VPN tunnel metrics including BGP status, and CloudWatch Alarms can trigger alerts. Option B is wrong because VPC Flow Logs do not include BGP status. Option C is wrong because AWS Config does not monitor BGP. Option E is wrong because CloudTrail does not monitor BGP.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon CloudWatch Alarms on the BGP status metric.
Why this is correct
Alarms can notify when BGP goes down.
Related concept
Read the scenario before looking for a memorised answer.
AWS Config rules.
Why it's wrong here
Config tracks configuration, not operational status.
VPC Flow Logs.
Why it's wrong here
Flow Logs capture IP traffic, not BGP.
AWS CloudTrail logs.
Why it's wrong here
CloudTrail logs API calls, not BGP.
Amazon CloudWatch metrics for VPN tunnels.
Why this is correct
CloudWatch provides BGP status metrics.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
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
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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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FAQ
Network Management and Operations — This question tests Network Management and Operations — Read the scenario before looking for a memorised answer..
The correct answer is: Amazon CloudWatch Alarms on the BGP status metric. — Options A and D are correct. CloudWatch can monitor VPN tunnel metrics including BGP status, and CloudWatch Alarms can trigger alerts. Option B is wrong because VPC Flow Logs do not include BGP status. Option C is wrong because AWS Config does not monitor BGP. Option E is wrong because CloudTrail does not monitor BGP.
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.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company has a VPC with a VPN connection to an on-premises network. The network team reports that the VPN tunnel is flapping intermittently. You need to identify the cause. Which AWS service provides logs that can help troubleshoot the VPN tunnel status?
hardWhy B: The correct answer is A because VPN tunnel metrics are available in CloudWatch, including tunnel state and data in/out. Option B is wrong because CloudTrail does not provide tunnel status logs. Option C is wrong because VPC Flow Logs capture traffic, not tunnel status. Option D is wrong because AWS Health Dashboard provides service health, not specific VPN tunnel logs.
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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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