The correct first action is to triage the incident to determine its scope and severity. In Microsoft 365 Defender, triage is the foundational step because it allows you to assess the incident’s impact, affected assets, and threat level before committing resources to containment or investigation. Without this initial assessment, you risk escalating a low-severity alert or prematurely isolating a device, which could disrupt business operations. On the SC-200 exam, this concept tests your understanding of the Microsoft 365 Defender incident response lifecycle, where triage precedes any automated or manual action. A common trap is choosing “isolate the device” or “collect data” first, but remember that triage is the gatekeeper—it ensures you’re solving the right problem with the right urgency. Memory tip: “Triage before you rage” — always pause to assess scope and severity before taking any disruptive steps.
SC-200 Respond to security incidents Practice Question
This SC-200 practice question tests your understanding of respond to security incidents. 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.
You are an incident responder for a company using Microsoft 365 Defender. A critical incident is assigned to you. What is the first action you should take according to best practices?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
✓
Triage the incident to determine the scope and severity.
Option C is correct because the first step in incident response is to triage the incident to understand its scope and severity before taking any action. Option A is wrong because isolating the device should only be done after assessing the impact. Option B is wrong because you need to investigate before collecting data. Option D is wrong because escalation should occur after initial triage if needed.
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.
✓
Triage the incident to determine the scope and severity.
Why this is correct
Triage is the first recommended step in any incident response.
Clue confirmation
The clue words "best", "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Escalate the incident to senior management.
Why it's wrong here
Escalation should occur after initial assessment.
✗
Immediately isolate all affected devices.
Why it's wrong here
Isolation should be based on triage to avoid unnecessary disruption.
✗
Collect a full memory dump from the affected systems.
Why it's wrong here
Data collection should follow triage to ensure relevance.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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-200 question in full detail.
Identify which SC-200 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Respond to security incidents — This question tests Respond to security incidents — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Triage the incident to determine the scope and severity. — Option C is correct because the first step in incident response is to triage the incident to understand its scope and severity before taking any action. Option A is wrong because isolating the device should only be done after assessing the impact. Option B is wrong because you need to investigate before collecting data. Option D is wrong because escalation should occur after initial triage if needed.
What should I do if I get this SC-200 question wrong?
Identify which SC-200 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "best", "first". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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