SC-900 Practice Question: Describe the capabilities of Microsoft security solutions
Your company is deploying Microsoft Defender for Office 365. The security team wants to automatically remove malicious attachments from emails before they reach user inboxes. Which protection feature should be configured?
⚠ Common exam trap
Candidates often confuse Safe Attachments with Safe Links, thinking both handle attachments, but Safe Links only protects against malicious URLs, not file attachments, while Safe Attachments is the dedicated feature for attachment-based malware protection.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Safe Attachments policies
Safe Attachments policies in Microsoft Defender for Office 365 are specifically designed to detect and neutralize malicious attachments in email messages before they reach user inboxes. This feature uses a detonation environment to open attachments in a sandbox, analyzing their behavior for threats, and then automatically removes or replaces the attachment if it is found to be malicious.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Anti-spam policies
Why it's wrong here
Anti-spam policies in Microsoft Defender for Office 365 primarily focus on identifying and filtering unsolicited bulk email, phishing attempts, and other unwanted messages. They leverage sender reputation, content filtering, and heuristic analysis to block or quarantine emails based on characteristics commonly associated with spam. These policies are not designed to analyze or detonate potentially malicious file attachments for malware, which requires a different type of advanced threat protection.
- ✓
Safe Attachments policies
Why this is correct
Safe Attachments policies are specifically designed to protect against zero-day malware and advanced threats embedded in email attachments. This feature utilizes a cloud-based sandbox environment to detonate and analyze attachments in real-time, isolating them from the user's environment. If an attachment is deemed malicious, it is either blocked or quarantined before it can reach the recipient's inbox, preventing the execution of harmful code.
- ✗
Anti-phishing policies
Why it's wrong here
Anti-phishing policies in Defender for Office 365 are engineered to protect against impersonation and credential theft attacks. They analyze various email attributes, including sender authenticity (SPF, DKIM, DMARC), domain spoofing, and user impersonation attempts, to identify and quarantine sophisticated phishing emails. While phishing emails may contain malicious links or attachments, the core function of these policies is to detect and mitigate identity-based threats, distinct from attachment scanning.
- ✗
Safe Links policies
Why it's wrong here
Safe Links policies provide time-of-click protection against malicious URLs embedded in emails, Microsoft Teams, and Office applications. This feature rewrites original URLs, and when a user clicks a rewritten link, Safe Links scans the destination in real-time to determine if it is malicious. If a threat is detected, the user is prevented from accessing the dangerous website, even if the URL was initially benign, thereby preventing drive-by downloads or phishing site access.
Go deeper
Related to this question
Learn chapter
Core Security Concepts
Key term
Microsoft Defender for Office 365
Microsoft Defender for Office 365 is a cloud-based email and collaboration security service that protects organizations against malicious threats like phishing, malware, and spam in email messages and Office 365 apps.
Key term
Safe Attachments
Safe Attachments is a Microsoft Defender for Office 365 feature that opens email attachments in a virtual sandbox to detect and block malicious content before they reach your inbox.
About these practice questions
One of 1,250 original SC-900 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SC-900 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 SC-900 exam.