The answer is to check the BGP session status using the 'bgp session' command on the on-premises router. This step is critical because when you troubleshoot BGP session on Direct Connect, verifying the actual route advertisements received from AWS directly reveals whether the expected VPC prefixes are being propagated; if routes are missing or incorrect, traffic to the specific VPC will fail intermittently. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this scenario tests your understanding that BGP is the control plane for Direct Connect, and the most common trap is jumping to check AWS-side configurations first—when the issue is often a missing or flapping prefix on the on-premises side. A helpful memory tip is "Check the neighbor, not the cloud first"—always validate the BGP session and received routes from your router’s perspective before diving into AWS console logs.
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.
A company has a Direct Connect connection with multiple virtual interfaces (VIFs). The network team notices that traffic to a specific VPC is intermittently failing. The team suspects an issue with BGP routing. Which THREE steps should the team take to troubleshoot the BGP session? (Choose THREE.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
View the BGP route advertisements received by the on-premises router from AWS.
Option A is correct because viewing the BGP route advertisements received by the on-premises router from AWS directly reveals whether the expected prefixes are being advertised. If the routes are missing or incorrect, the VPC traffic will fail intermittently, making this a primary troubleshooting step for BGP routing issues.
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.
✓
View the BGP route advertisements received by the on-premises router from AWS.
Why this is correct
This helps identify if AWS is advertising the expected routes.
Related concept
Read the scenario before looking for a memorised answer.
✗
Check the Direct Connect endpoint health in the AWS Management Console.
Why it's wrong here
Direct Connect endpoints are on-premises; AWS console shows connection status, not endpoint health.
✓
Verify the allowed prefixes configuration on the virtual interface in the AWS console.
Why this is correct
If allowed prefixes do not match, routes may be rejected.
Related concept
Read the scenario before looking for a memorised answer.
✗
Examine VPC Flow Logs for dropped packets on the virtual interface.
Check the BGP session status using the 'bgp session' command on the on-premises router.
Why this is correct
BGP session state (e.g., Established) indicates the health of the session.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
AWS often tests the distinction between physical connectivity checks (like endpoint health) and BGP-specific troubleshooting steps, leading candidates to select options that address layer 1/2 issues instead of the BGP routing layer.
Trap categories for this question
Command / output trap
Direct Connect endpoints are on-premises; AWS console shows connection status, not endpoint health.
Detailed technical explanation
How to think about this question
BGP over AWS Direct Connect uses eBGP to exchange routes between the customer router and AWS. The allowed prefixes configuration on the virtual interface (Option C) acts as a prefix filter; if it does not include the VPC CIDR, AWS will not advertise the route, causing traffic failures. The 'bgp session' command (Option E) on the on-premises router shows the BGP neighbor state (e.g., Established, Idle, Active) and is essential for verifying that the TCP session and keepalives are functioning correctly.
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.
TExam Day Tips
→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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: View the BGP route advertisements received by the on-premises router from AWS. — Option A is correct because viewing the BGP route advertisements received by the on-premises router from AWS directly reveals whether the expected prefixes are being advertised. If the routes are missing or incorrect, the VPC traffic will fail intermittently, making this a primary troubleshooting step for BGP routing issues.
What should I do if I get this ANS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
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 →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.