The answer is to configure a Safe Attachments policy with dynamic delivery and enable Zero-Hour Auto Purge (ZAP). Dynamic delivery allows users to view the email body and safe text while the attachment is being analyzed in a sandbox, preventing workflow disruption. If the analysis later flags the attachment as malicious—a false positive scenario—ZAP automatically moves that email from the user’s inbox to quarantine, retroactively removing the threat. On the MS-102 exam, this question tests your understanding of how Defender for Office 365 layers protection: Safe Attachments handles the scan and delivery method, while ZAP provides the post-delivery cleanup. A common trap is confusing Safe Attachments with Anti-malware policies, which lack dynamic delivery, or with Safe Links, which only handle URLs. Remember the memory tip: “Dynamic delivers the body, ZAP zaps the bad later.”
MS-102 Practice Question: Manage security and threats by using Microsoft Defender XDR
This MS-102 practice question tests your understanding of manage security and threats by using microsoft defender xdr. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 administrator is configuring Microsoft Defender for Office 365 to protect against zero-day malware in attachments. The administrator wants to use dynamic delivery so that users can view the email body while the attachment is being analyzed. However, the administrator is concerned about false positives and wants to ensure that if a benign attachment is later found to be malicious, it is removed from the user's inbox. What should the administrator configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a Safe Attachments policy with dynamic delivery and enable ZAP.
Option D is correct because Safe Attachments policies with dynamic delivery can be set to allow email body delivery while the attachment is scanned, and if later found malicious, the attachment can be removed using the 'Zero-hour auto purge' (ZAP) feature. Option A is wrong because Anti-phishing policies do not handle attachments. Option B is wrong because Safe Links policies handle URLs, not attachments. Option C is wrong because Anti-malware policies do not provide dynamic delivery.
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
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Configure a Safe Attachments policy with dynamic delivery and enable ZAP.
Why this is correct
Safe Attachments with dynamic delivery and ZAP meets the requirement.
Related concept
Static NAT maps one inside address to one outside address.
✗
Configure a Safe Links policy with URL detonation.
Why it's wrong here
Safe Links policies handle URLs, not attachments.
✗
Configure an anti-phishing policy with mailbox intelligence.
Why it's wrong here
Anti-phishing policies do not handle attachments.
✗
Configure an anti-malware policy with common attachments filter.
Why it's wrong here
Anti-malware policies do not provide dynamic delivery.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
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
How to think about this question
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.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
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
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-102 question in full detail.
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 MS-102 NAT questions on configuration and troubleshooting.
Manage security and threats by using Microsoft Defender XDR — This question tests Manage security and threats by using Microsoft Defender XDR — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Configure a Safe Attachments policy with dynamic delivery and enable ZAP. — Option D is correct because Safe Attachments policies with dynamic delivery can be set to allow email body delivery while the attachment is scanned, and if later found malicious, the attachment can be removed using the 'Zero-hour auto purge' (ZAP) feature. Option A is wrong because Anti-phishing policies do not handle attachments. Option B is wrong because Safe Links policies handle URLs, not attachments. Option C is wrong because Anti-malware policies do not provide dynamic delivery.
What should I do if I get this MS-102 question wrong?
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 MS-102 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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