The answer is Safe Links. This Microsoft Defender for Office 365 feature is the correct choice because it provides real-time URL scanning and click-time verification, analyzing the link at the exact moment a user clicks it to check against a dynamic list of known malicious sites and perform a deep inspection for sophisticated phishing threats. On the SC-900 exam, this question tests your ability to distinguish between the two core phishing protection features: Safe Links handles malicious URLs in email and Office documents, while Safe Attachments focuses on scanning email attachments for malware. A common trap is confusing the two, but remember that Safe Links is about links and Safe Attachments is about files. For a quick memory tip, think “Links get clicked, Attachments get opened.”
SC-900 Practice Question: Describe the capabilities of Microsoft security solutions
This SC-900 practice question tests your understanding of describe the capabilities of microsoft security solutions. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 company uses Microsoft 365 and wants to protect against sophisticated phishing attacks that use malicious links in email. They also want real-time analysis of URLs at the time of click. Which Microsoft Defender for Office 365 feature provides this?
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 answer because it provides URL scanning and real-time click-time verification of links in email messages and Office documents. When a user clicks a link, Defender for Office 365 checks the URL against a dynamic list of known malicious sites and performs a real-time analysis to determine if the link is safe at that moment, protecting against sophisticated phishing attacks that use malicious links.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Safe Links
Why this is correct
Correct. Safe Links proactively protects users from malicious URLs by scanning links at the time of click, blocking access to harmful sites.
Related concept
Read the scenario before looking for a memorised answer.
✗
Safe Attachments
Why it's wrong here
Incorrect. Safe Attachments scans email attachments for malware, not URLs embedded in messages.
✗
Anti-spam
Why it's wrong here
Incorrect. Anti-spam filters are designed to block unwanted bulk email, not specifically to protect against malicious links.
✗
Anti-malware
Why it's wrong here
Incorrect. Anti-malware protects against known malware in email, but does not provide real-time URL scanning.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Safe Links with Safe Attachments, but Safe Attachments focuses on file-based malware detonation, not on real-time URL analysis at the moment of click.
Detailed technical explanation
How to think about this question
Safe Links uses a proxy-based architecture where URLs are rewritten to point to Microsoft's safe link verification service. At the time of click, the service performs a reputation lookup and, if necessary, a real-time detonation of the URL in a sandbox to assess its behavior. This feature also supports time-of-click protection for links in Microsoft Teams, Office apps, and other supported clients, not just email.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. 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 SC-900 question in full detail.
Describe the capabilities of Microsoft security solutions — This question tests Describe the capabilities of Microsoft security solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Safe Links — Safe Links is the correct answer because it provides URL scanning and real-time click-time verification of links in email messages and Office documents. When a user clicks a link, Defender for Office 365 checks the URL against a dynamic list of known malicious sites and performs a real-time analysis to determine if the link is safe at that moment, protecting against sophisticated phishing attacks that use malicious links.
What should I do if I get this SC-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Your organization is implementing Microsoft Defender for Office 365 to protect against phishing attacks. You need to ensure that when a user clicks a malicious link in an email, the user is warned and the action is blocked. Which policy should you configure?
hard
A.Safe Attachments policy
✓ B.Safe Links policy
C.Anti-spam policy
D.Anti-phishing policy
Why B: Option B is correct because Safe Links in Defender for Office 365 provides real-time time-of-click protection against malicious links. Option A is wrong because Safe Attachments scans attachments, not links. Option C is wrong because anti-phishing policies protect against spoofing and impersonation but do not block links at click time. Option D is wrong because anti-spam policies filter spam, not malicious links.
Last reviewed: Jun 11, 2026
Question Discussion
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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.
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