- A
Azure Firewall
Why wrong: Azure Firewall is a cloud-native network security service that protects Azure virtual network resources, but it does not inspect or rewrite URLs in email messages.
- B
Microsoft Defender for Office 365
Microsoft Defender for Office 365 provides Safe Links and Safe Attachments features to protect against malicious links and attachments in emails and Office documents. Safe Links rewrites URLs and checks them at click time.
- C
Microsoft Defender for Endpoint
Why wrong: Microsoft Defender for Endpoint is an endpoint detection and response (EDR) solution that protects devices, but it does not provide email-level link protection.
- D
Microsoft Defender for Identity
Why wrong: Microsoft Defender for Identity is a cloud-based security solution that identifies and detects advanced threats targeting on-premises Active Directory environments, not email link protection.
Quick Answer
The answer is Microsoft Defender for Office 365, specifically its Safe Links feature. Safe Links directly meets the requirement by rewriting URLs in email messages at the time of delivery, then performing a real-time check against threat intelligence the moment a user clicks the link—blocking access if the destination is malicious. On the SC-900 exam, this scenario tests your understanding of how Microsoft Defender for Office 365’s Safe Links differs from other protections like Safe Attachments or Exchange Online Protection; a common trap is confusing Safe Links (URL rewriting and click-time verification) with Safe Attachments (file sandboxing). Remember the key distinction: Safe Links rewrites and checks links, while Safe Attachments detonates files. For a quick memory tip, think “Safe Links = Link Check” to recall its core function of rewriting and verifying URLs in phishing emails.
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 its users from clicking malicious links in phishing emails. The security team needs a solution that rewrites URLs in email messages to check the link at the time of click, and blocks access if the link is malicious. Which Microsoft security solution should they use?
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
Microsoft Defender for Office 365
Microsoft Defender for Office 365 includes Safe Links, a feature specifically designed to protect users from malicious URLs in email messages. Safe Links rewrites URLs at the time of delivery, and when a user clicks a link, it checks the destination in real time against threat intelligence; if the link is malicious, access is blocked. This directly matches the requirement to rewrite URLs and perform click-time verification.
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.
- ✗
Azure Firewall
Why it's wrong here
Azure Firewall is a cloud-native network security service that protects Azure virtual network resources, but it does not inspect or rewrite URLs in email messages.
- ✓
Microsoft Defender for Office 365
Why this is correct
Microsoft Defender for Office 365 provides Safe Links and Safe Attachments features to protect against malicious links and attachments in emails and Office documents. Safe Links rewrites URLs and checks them at click time.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Microsoft Defender for Endpoint
Why it's wrong here
Microsoft Defender for Endpoint is an endpoint detection and response (EDR) solution that protects devices, but it does not provide email-level link protection.
- ✗
Microsoft Defender for Identity
Why it's wrong here
Microsoft Defender for Identity is a cloud-based security solution that identifies and detects advanced threats targeting on-premises Active Directory environments, not email link protection.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Microsoft Defender for Office 365 (which includes Safe Links and Safe Attachments for email security) with Microsoft Defender for Endpoint (which protects devices) or Azure Firewall (which protects network traffic), leading them to select a solution that does not address the specific email URL rewriting requirement.
Detailed technical explanation
How to think about this question
Safe Links operates by wrapping URLs with a Microsoft-owned proxy domain (e.g., `https://nam01.safelinks.protection.outlook.com/?url=...`), which allows the service to intercept the click and perform a real-time reputation check against Microsoft's threat intelligence feeds. The feature can also be configured to scan links in Microsoft Teams, Office documents, and other Office 365 apps, not just email. In a real-world scenario, if a user clicks a link that was benign at delivery but later becomes malicious, Safe Links will block the click because it re-evaluates the URL at the time of the click.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
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FAQ
Questions learners often ask
What does this SC-900 question test?
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: Microsoft Defender for Office 365 — Microsoft Defender for Office 365 includes Safe Links, a feature specifically designed to protect users from malicious URLs in email messages. Safe Links rewrites URLs at the time of delivery, and when a user clicks a link, it checks the destination in real time against threat intelligence; if the link is malicious, access is blocked. This directly matches the requirement to rewrite URLs and perform click-time verification.
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.
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Last reviewed: Jun 11, 2026
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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