SC-900 Practice Question: Describe the capabilities of Microsoft security solutions
A company wants to use Microsoft Defender for Office 365 to protect against malicious links in email. Which feature should they enable?
⚠ Common exam trap
Many candidates confuse Safe Links with Safe Attachments because both are part of Defender for Office 365, but Safe Links is specifically for URLs while Safe Attachments is for file attachments.
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 Links
Safe Links is the correct feature because it specifically protects against malicious links in email by scanning URLs at the time of click, checking them against real-time threat intelligence, and blocking or warning users if the link is malicious. This is a core capability of Microsoft Defender for Office 365 designed to prevent phishing and malware delivery via hyperlinks.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Safe Attachments
Why it's wrong here
Microsoft Defender for Office 365's Safe Attachments feature specifically protects against malicious files attached to emails. It operates by opening attachments in a virtual, isolated environment (a sandbox) to analyze their behavior before they reach the user's inbox. This process identifies and neutralizes malware embedded within documents, executables, or other file types, but it does not scan or rewrite URLs embedded within the email body or documents. Therefore, it is not the correct solution for protecting against malicious links.
- ✗
Anti-malware policy
Why it's wrong here
An Anti-malware policy in Microsoft Defender for Office 365 primarily focuses on detecting and preventing known malware, viruses, and other malicious software from entering an organization's email system. These policies utilize signature-based detection, heuristic analysis, and machine learning to identify and quarantine infected messages or attachments. While crucial for overall email security, anti-malware policies are designed to combat file-based threats and do not specifically rewrite or analyze URLs embedded within email content for potential malicious redirection, which is a distinct protection mechanism.
- ✓
Safe Links
Why this is correct
Safe Links is a core feature of Microsoft Defender for Office 365 specifically designed to protect users from malicious URLs. It operates by rewriting original links in emails and Office documents, replacing them with secure Microsoft Defender for Office 365 URLs. When a user clicks a rewritten link, Safe Links performs a real-time scan to determine if the destination website is malicious. If the link is deemed unsafe, the user is blocked from accessing the site, effectively preventing phishing attacks and drive-by downloads originating from embedded URLs.
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Anti-spam policy
Why it's wrong here
An Anti-spam policy in Microsoft Defender for Office 365 is configured to identify and filter out unsolicited bulk email (spam) and certain types of phishing attempts based on various characteristics like sender reputation, content analysis, and header information. While it helps reduce the volume of unwanted emails, its primary function is not to proactively scan and rewrite individual URLs within legitimate-looking emails that might contain malicious links. It focuses on classifying and quarantining entire messages based on spam confidence levels, rather than providing real-time URL protection at the point of click.
Go deeper
Related to this question
Learn chapter
Core Security Concepts
Key term
Microsoft Defender
Microsoft Defender is a suite of security products that protects devices, data, and identities from cyber threats like malware, phishing, and unauthorized access.
Key term
Malware
Malware is any software intentionally designed to cause damage, disrupt operations, steal data, or gain unauthorized access to computer systems.
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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.