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.
Refer to the exhibit. A security analyst is reviewing an alert from Microsoft 365 Defender. The alert is associated with an incident. What is the best first step to investigate this alert?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Open the associated incident to view all related alerts and entities.
Option A is correct because Microsoft 365 Defender incidents aggregate multiple alerts and entities (users, devices, mailboxes) into a single view, providing the full context needed to understand the attack chain. Opening the incident first allows the analyst to correlate the alert with related alerts, affected assets, and the incident timeline, which is the recommended initial step in incident response workflows.
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.
✓
Open the associated incident to view all related alerts and entities.
Why this is correct
Investigating the incident provides a holistic view of the attack.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Isolate the affected user's device immediately.
Why it's wrong here
Isolation may be necessary but should be done after understanding the full incident context.
✗
Mark the alert as resolved.
Why it's wrong here
Resolving without investigation could miss related threats.
✗
Run an automated simulation to test the alert.
Why it's wrong here
Simulations are for testing detection, not for live investigation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often jump to an immediate containment action (like isolating a device) without first gathering context, but Microsoft's incident-first approach emphasizes investigation before remediation to avoid false positives and ensure proportional response.
Detailed technical explanation
How to think about this question
Microsoft 365 Defender uses a unified incident queue that correlates alerts from Microsoft Defender for Endpoint, Defender for Office 365, Defender for Identity, and Defender for Cloud Apps. The incident entity graph shows relationships between alerts, users, devices, and IP addresses, enabling analysts to pivot from a single alert to the full attack story. In a real-world scenario, an alert about a suspicious login might be linked to a device alert showing malware installation, and only by opening the incident can the analyst see both and determine the correct response.
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.
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: Open the associated incident to view all related alerts and entities. — Option A is correct because Microsoft 365 Defender incidents aggregate multiple alerts and entities (users, devices, mailboxes) into a single view, providing the full context needed to understand the attack chain. Opening the incident first allows the analyst to correlate the alert with related alerts, affected assets, and the incident timeline, which is the recommended initial step in incident response workflows.
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.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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