This AZ-500 practice question tests your understanding of secure networking. 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 security team needs to analyze network traffic to and from Azure virtual machines to investigate a potential security incident. They want to capture information such as source IP, destination IP, port, and protocol. Which Azure service should they enable on the network security groups (NSGs) associated with the virtual machine subnets?
NSG flow logs record all traffic allowed or denied by the NSG, providing the detailed data needed for investigation.
B
Azure Monitor logs
Why wrong: Azure Monitor logs collect metrics and logs from various resources, but not specifically IP flow data from NSGs.
C
Traffic Analytics
Why wrong: Traffic Analytics is an add-on that visualizes NSG flow logs; it does not capture the data itself.
D
Azure Firewall logs
Why wrong: Azure Firewall logs capture traffic through the firewall, but the VMs may not use the firewall, and NSG logs are needed for the subnet level.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Network Watcher NSG flow logs
Network Watcher NSG flow logs capture IP traffic flowing through Network Security Groups, recording source IP, destination IP, port, and protocol for each flow. This directly meets the requirement to analyze network traffic to and from Azure VMs for security incident investigation.
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.
✓
Network Watcher NSG flow logs
Why this is correct
NSG flow logs record all traffic allowed or denied by the NSG, providing the detailed data needed for investigation.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Monitor logs
Why it's wrong here
Azure Monitor logs collect metrics and logs from various resources, but not specifically IP flow data from NSGs.
✗
Traffic Analytics
Why it's wrong here
Traffic Analytics is an add-on that visualizes NSG flow logs; it does not capture the data itself.
✗
Azure Firewall logs
Why it's wrong here
Azure Firewall logs capture traffic through the firewall, but the VMs may not use the firewall, and NSG logs are needed for the subnet level.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Traffic Analytics (a visualization/analysis layer) with the underlying data capture mechanism (NSG flow logs), or mistakenly think Azure Monitor logs or Azure Firewall logs provide the same subnet-level flow data without additional configuration.
Detailed technical explanation
How to think about this question
NSG flow logs are based on the concept of 'flow tuples' (source IP, destination IP, source port, destination port, protocol) and are collected at 10-second intervals for accepted and denied traffic. The logs are stored in a storage account and can be queried via Log Analytics or Traffic Analytics for deeper analysis, but the raw data capture is the critical first step for incident investigation.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-500 question in full detail.
Secure networking — This question tests Secure networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Network Watcher NSG flow logs — Network Watcher NSG flow logs capture IP traffic flowing through Network Security Groups, recording source IP, destination IP, port, and protocol for each flow. This directly meets the requirement to analyze network traffic to and from Azure VMs for security incident investigation.
What should I do if I get this AZ-500 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.
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Question Discussion
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