The answer is the VPN is configured for BGP but only a static route is added. This is correct because when the VPN connection has the attribute StaticRoutesOnly set to false, the AWS VPN endpoint expects dynamic routing via BGP and will ignore any manually entered static routes, even though the tunnel state shows as 'available' and the on-premises firewall confirms the tunnel is established. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this scenario tests your understanding of the interaction between VPN routing options and BGP configuration—a common trap is assuming that a static route will work alongside BGP when the VPN is explicitly set to use dynamic routing only. Remember that StaticRoutesOnly: false means BGP is mandatory; if you see a static route in the configuration, it’s a misconfiguration that blocks traffic. Memory tip: “False means BGP rules—static routes are just fools.”
ANS-C01 Network Management and Operations Practice Question
This ANS-C01 practice question tests your understanding of network management and operations. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Network Topology
A network engineer troubleshoots a VPN connection that shows 'available' state but traffic is not passing. The on-premises firewall logs show that the tunnel is established, but no traffic. The engineer checks the VPN configuration. Based on the exhibit, what is the MOST likely cause of the problem?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The VPN is configured for BGP (StaticRoutesOnly: false), but only a static route is added.
Option A is correct because the VPN connection has StaticRoutesOnly set to false, meaning dynamic routing (BGP) is expected, but the route shown is a static route, which would not be used because the VPN is configured for BGP. Option B is incorrect because the VPN state is available. Option C is incorrect because the inside IP addresses are present. Option D is incorrect because the outside IP addresses are routable.
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.
✗
The VPN connection is not in 'available' state.
Why it's wrong here
The exhibit shows 'available' state.
✓
The VPN is configured for BGP (StaticRoutesOnly: false), but only a static route is added.
Why this is correct
With StaticRoutesOnly: false, BGP is required for route propagation; static routes are ignored.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The outside IP addresses are not routable over the internet.
Why it's wrong here
The outside IP addresses are public and routable.
✗
The inside IP addresses for the tunnels are missing.
Why it's wrong here
The exhibit shows inside IP addresses.
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
The exhibit shows 'available' state.
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: The VPN is configured for BGP (StaticRoutesOnly: false), but only a static route is added. — Option A is correct because the VPN connection has StaticRoutesOnly set to false, meaning dynamic routing (BGP) is expected, but the route shown is a static route, which would not be used because the VPN is configured for BGP. Option B is incorrect because the VPN state is available. Option C is incorrect because the inside IP addresses are present. Option D is incorrect because the outside IP addresses are routable.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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