The answer is the Effective Routes tool in Azure Network Watcher. This is the correct choice because it displays the actual, consolidated routes applied to a specific network interface, including user-defined routes (UDRs), BGP-propagated routes, and VNet peering routes, and it explicitly shows which route wins based on the longest prefix match and route source precedence. For the AZ-104 exam, this scenario tests your understanding of how Azure resolves conflicting routing paths—a common trap is assuming a UDR or peering connection is active without verifying the effective route table, which reveals the true next hop for a destination like 10.20.4.8. Remember, Effective Routes is your single source of truth for troubleshooting routing failures, as it cuts through configuration assumptions. Memory tip: Think "Effective = Actual" to recall that this tool shows the real winning route, not just what you configured.
AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual networking. 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.
After a user-defined route and VNet peering were added, a VM in a spoke subnet still does not reach 10.20.4.8 as expected. You need to confirm which route Azure will actually select on that VM's NIC, including any propagated routes and the route that wins. Which Network Watcher tool should you use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Effective routes
Effective routes displays the actual routes applied to a network interface, including user-defined routes (UDRs), BGP-propagated routes, and VNet peering routes, along with the route priority (based on the longest prefix match and route source precedence). This allows you to see exactly which route wins for the destination 10.20.4.8, resolving why the VM cannot reach it despite the configured UDR and peering.
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.
✗
Connection troubleshoot
Why it's wrong here
Connection troubleshoot tests end-to-end connectivity, but it does not show the NIC's selected route.
✓
Effective routes
Why this is correct
Effective routes shows the routes applied to the NIC and which next hop Azure will use for the destination.
Related concept
Read the scenario before looking for a memorised answer.
✗
IP flow verify
Why it's wrong here
IP flow verify is for NSG allow or deny decisions, not for route selection analysis.
✗
Packet capture
Why it's wrong here
Packet capture collects traffic for inspection, but it does not identify the selected routing entry.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse 'IP flow verify' (which checks NSG rules) with route verification, but IP flow verify does not show the routing table or the winning route for a destination IP.
Trap categories for this question
Command / output trap
Connection troubleshoot tests end-to-end connectivity, but it does not show the NIC's selected route.
Detailed technical explanation
How to think about this question
Azure uses a route selection algorithm that first matches the longest prefix, then breaks ties by route source precedence: user-defined routes (UDRs) override BGP routes, which override system routes (including VNet peering). Effective routes shows the final resolved route for each prefix, including the next hop type and IP, and is retrieved via the Azure Resource Manager REST API or the Azure portal, reflecting the state of the NIC's effective routing table after all policies are applied.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-104 question in full detail.
Implement and Manage Virtual Networking — This question tests Implement and Manage Virtual Networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Effective routes — Effective routes displays the actual routes applied to a network interface, including user-defined routes (UDRs), BGP-propagated routes, and VNet peering routes, along with the route priority (based on the longest prefix match and route source precedence). This allows you to see exactly which route wins for the destination 10.20.4.8, resolving why the VM cannot reach it despite the configured UDR and peering.
What should I do if I get this AZ-104 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 AZ-104 practice question is part of Courseiva's free Microsoft 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 AZ-104 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.