This AZ-500 practice question tests your understanding of secure 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.
You have an Azure subscription with multiple VNets connected via VNet peering. You need to audit all network traffic between two specific VNets for compliance. The solution must capture traffic metadata (source/destination IP, ports, protocol) without affecting performance. What should you use?
Route all traffic through Azure Firewall and enable logs.
Why wrong: Adds latency and cost.
Enable NSG flow logs and use Network Watcher traffic analytics.
Captures metadata with minimal performance impact.
Use Network Watcher packet capture on the VMs.
Why wrong: Not scalable for continuous monitoring.
Enable Azure Monitor metrics on the VNet peering.
Why wrong: Metrics provide aggregate statistics, not flow data.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Enable NSG flow logs and use Network Watcher traffic analytics.
Option C is correct because Network Watcher traffic analytics uses NSG flow logs to capture metadata and provides insights. Option A is wrong because Azure Monitor metrics don't capture flow data. Option B is wrong because Azure Firewall logs would require routing traffic through it. Option D is wrong because packet capture is for troubleshooting, not continuous auditing.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Route all traffic through Azure Firewall and enable logs.
Why it's wrong here
Adds latency and cost.
Enable NSG flow logs and use Network Watcher traffic analytics.
Why this is correct
Captures metadata with minimal performance impact.
Related concept
Static NAT maps one inside address to one outside address.
Use Network Watcher packet capture on the VMs.
Why it's wrong here
Not scalable for continuous monitoring.
Enable Azure Monitor metrics on the VNet peering.
Why it's wrong here
Metrics provide aggregate statistics, not flow data.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
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
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-500 NAT questions on configuration and troubleshooting.
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FAQ
Secure networking — This question tests Secure networking — Static NAT maps one inside address to one outside address..
The correct answer is: Enable NSG flow logs and use Network Watcher traffic analytics. — Option C is correct because Network Watcher traffic analytics uses NSG flow logs to capture metadata and provides insights. Option A is wrong because Azure Monitor metrics don't capture flow data. Option B is wrong because Azure Firewall logs would require routing traffic through it. Option D is wrong because packet capture is for troubleshooting, not continuous auditing.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-500 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
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