- A
Effective routes, because it shows the exact NSG rule name for blocked traffic.
Why wrong: Effective routes shows the routing table applied to a NIC, not the specific NSG rule that permits or denies a flow.
- B
IP flow verify, because it evaluates the 5-tuple and reports the matching allow or deny rule.
IP flow verify is designed to test a specific source, destination, protocol, and port combination against NSG rules. It returns whether the flow is allowed or denied and identifies the rule that matched, which makes it the right tool when you need to prove whether TCP 1433 is blocked and why.
- C
Packet capture, because it automatically tells you which NSG rule denied the traffic.
Why wrong: Packet capture records packets for later inspection, but it does not directly evaluate NSG policy or identify the matching rule name.
- D
Connection troubleshoot, because it only checks DNS name resolution.
Why wrong: Connection troubleshoot can test end-to-end reachability, but it is not the most precise tool for identifying the exact NSG rule that allows or denies the traffic flow.
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.
A VM named VM1 cannot establish TCP 1433 connectivity to VM2. The administrator wants to test the exact flow, confirm whether an NSG allows or denies it, and identify the rule that applies if the flow is blocked. Which Network Watcher tool should be used?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
IP flow verify, because it evaluates the 5-tuple and reports the matching allow or deny rule.
IP flow verify is the correct tool because it evaluates the 5-tuple (source IP, destination IP, source port, destination port, and protocol) against the effective Network Security Group (NSG) rules for a given virtual machine network interface. It explicitly reports whether the traffic is allowed or denied and, if denied, identifies the exact NSG rule (name and priority) that caused the denial. This directly meets the administrator's requirement to test the exact flow and identify the blocking rule.
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.
- ✗
Effective routes, because it shows the exact NSG rule name for blocked traffic.
Why it's wrong here
Effective routes shows the routing table applied to a NIC, not the specific NSG rule that permits or denies a flow.
- ✓
IP flow verify, because it evaluates the 5-tuple and reports the matching allow or deny rule.
Why this is correct
IP flow verify is designed to test a specific source, destination, protocol, and port combination against NSG rules. It returns whether the flow is allowed or denied and identifies the rule that matched, which makes it the right tool when you need to prove whether TCP 1433 is blocked and why.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Packet capture, because it automatically tells you which NSG rule denied the traffic.
Why it's wrong here
Packet capture records packets for later inspection, but it does not directly evaluate NSG policy or identify the matching rule name.
- ✗
Connection troubleshoot, because it only checks DNS name resolution.
Why it's wrong here
Connection troubleshoot can test end-to-end reachability, but it is not the most precise tool for identifying the exact NSG rule that allows or denies the traffic flow.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'Connection troubleshoot' (which tests end-to-end connectivity and can indicate a block) with 'IP flow verify' (which explicitly identifies the exact NSG rule name that caused the denial), leading them to choose the less precise tool.
Trap categories for this question
Command / output trap
Effective routes shows the routing table applied to a NIC, not the specific NSG rule that permits or denies a flow.
Detailed technical explanation
How to think about this question
IP flow verify works by simulating the traffic flow using the Azure Resource Manager's network security rule evaluation engine, which processes the 5-tuple against all applied NSG rules (including application security groups and service tags) in priority order. It returns the effective rule (allow or deny) and, for deny, the exact rule name and priority, which is critical for troubleshooting complex multi-tier applications where overlapping NSG rules can cause unexpected blocks. In real-world scenarios, this tool is essential when an administrator suspects a specific NSG rule is blocking SQL Server traffic (TCP 1433) but needs to confirm which rule among hundreds is responsible.
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.
What to study next
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FAQ
Questions learners often ask
What does this AZ-104 question test?
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: IP flow verify, because it evaluates the 5-tuple and reports the matching allow or deny rule. — IP flow verify is the correct tool because it evaluates the 5-tuple (source IP, destination IP, source port, destination port, and protocol) against the effective Network Security Group (NSG) rules for a given virtual machine network interface. It explicitly reports whether the traffic is allowed or denied and, if denied, identifies the exact NSG rule (name and priority) that caused the denial. This directly meets the administrator's requirement to test the exact flow and identify the blocking rule.
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 →
Last reviewed: Jun 11, 2026
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.
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