Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company uses Exchange Online. The security team wants to protect users from malware hidden in email attachments by detonating them in a secure sandbox environment before delivery. Which Microsoft Defender for Office 365 feature should they enable?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Safe Links
Safe Links protects users from malicious URLs in email and Office documents by checking each link at the time of click, not by detonating attachments.
B
Best answer
Safe Attachments
Safe Attachments uses dynamic analysis in a sandbox to detonate attachments and determine if they are malicious, blocking or quarantining threatening attachments before delivery.
C
Distractor review
Anti-Phishing
Anti-Phishing policies protect against phishing attempts by detecting and blocking deceptive messages, but do not sandbox attachments.
D
Distractor review
Anti-Spoofing
Anti-Spoofing is a component of anti-phishing that protects against Forged From addresses (domain spoofing), not attachment analysis.
Common exam trap
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.
Technical deep dive
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.
Related practice questions
Related SC-900 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A company must retain all customer contracts for 10 years to comply with industry regulations. After 10 years, the contracts must be permanently deleted. Which Microsoft Purview solution should be used to automate this process?
Question 2
A company uses a cloud-based SaaS (Software as a Service) application for customer relationship management. According to the shared responsibility model, which security responsibility is primarily handled by the customer?
Question 3
A company runs a mix of on-premises servers and Azure virtual machines. They deploy Microsoft Defender for Endpoint on all servers. The security team wants to create custom queries to hunt for a specific attack pattern that involves a sequence of events across multiple machines, such as a PowerShell script being downloaded and then executed on several servers. They need to write their own detection rules based on advanced hunting data. Which Microsoft 365 Defender capability should they use?
Question 4
A company runs a consumer-facing e-commerce website and wants to allow customers to sign in using their existing social media accounts such as Google, Facebook, or LinkedIn. Which Microsoft Entra ID solution should they implement?
Question 5
A company has a hybrid identity environment with Active Directory synchronizing to Microsoft Entra ID. They want users to be able to reset their own on-premises passwords via the cloud SSPR portal. What is the minimum license required for this capability?
Question 6
A company uses a cloud-based Customer Relationship Management (CRM) system that is delivered as Software-as-a-Service (SaaS). According to the shared responsibility model, which security responsibility is primarily handled by the customer?
FAQ
Questions learners often ask
What does this SC-900 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Safe Attachments — Microsoft Defender for Office 365 provides multiple layers of protection against email threats. Safe Attachments provides time-of-detonation protection by opening each attachment in a virtual sandbox environment to check for malicious behavior before delivering the email to the user. Safe Links protects against malicious URLs. Anti-Phishing protects against phishing attempts. Anti-Spoofing protects against spoofed senders.
What should I do if I get this SC-900 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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