Quick Answer
The answer is the Intrusion Detection and Prevention System (IDPS). This is correct because Azure Firewall Premium’s IDPS uses signature-based detection to inspect outbound traffic for malware, analyzing packet payloads and application-layer data against known threat signatures to block malicious files. On the Microsoft Azure Security Engineer Associate AZ-500 exam, this question tests your ability to differentiate between Azure Firewall Premium’s security features: IDPS handles file-based malware detection, while threat intelligence filtering blocks known malicious IPs and domains, URL filtering controls web destinations, and web categories enforce content policies. A common trap is confusing threat intelligence with IDPS—remember that threat intelligence is for network-level reputation, not file-level inspection. For the exam, keep this memory tip: “IDPS digs into data, threat intel blocks the bad address.”
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.
Your company uses Azure Firewall Premium. You need to inspect outbound traffic for malware using signature-based detection. Which feature should you enable?
Web categories
Why wrong: Web categories are for content categorization, not malware detection.
URL filtering
Why wrong: URL filtering controls access based on URLs, not malware detection.
Threat intelligence-based filtering
Why wrong: This filters based on known malicious IPs/domains, not file signatures.
Intrusion Detection and Prevention System (IDPS)
IDPS provides signature-based detection for malware and exploits.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Intrusion Detection and Prevention System (IDPS)
Option D is correct because Azure Firewall Premium includes IDPS with signature-based detection for malware. Option A is wrong because threat intelligence filtering is for known malicious IPs/domains, not file-based malware. Option B is wrong because URL filtering is for categorizing URLs. Option C is wrong because web categories are for content filtering.
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.
Web categories
Why it's wrong here
Web categories are for content categorization, not malware detection.
URL filtering
Why it's wrong here
URL filtering controls access based on URLs, not malware detection.
Threat intelligence-based filtering
Why it's wrong here
This filters based on known malicious IPs/domains, not file signatures.
Intrusion Detection and Prevention System (IDPS)
Why this is correct
IDPS provides signature-based detection for malware and exploits.
Related concept
Static NAT maps one inside address to one outside address.
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
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
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: Intrusion Detection and Prevention System (IDPS) — Option D is correct because Azure Firewall Premium includes IDPS with signature-based detection for malware. Option A is wrong because threat intelligence filtering is for known malicious IPs/domains, not file-based malware. Option B is wrong because URL filtering is for categorizing URLs. Option C is wrong because web categories are for content filtering.
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
This AZ-500 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-500 exam.
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