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. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Exhibit
KQL query:
SecurityAlert
| where TimeGenerated > ago(7d)
| where AlertName has "MFA" or AlertName has "Suspicious sign-in"
| extend UserPrincipalName = tostring(Entities[0].AccountUpn)
| summarize Count = count() by UserPrincipalName, AlertName
| where Count > 3
Refer to the exhibit. A security analyst in your SOC runs the provided KQL query in Microsoft Sentinel to identify users with repeated MFA or suspicious sign-in alerts. The query returns no results even though alerts exist. What is the most likely issue?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The alert names do not contain the strings 'MFA' or 'Suspicious sign-in'.
The query uses the 'has' operator which is case-insensitive, but the alert names in the environment might use different wording (e.g., 'Azure ADMFA' instead of 'MFA'). Option A is incorrect because the query uses 'has' which is case-insensitive. Option C is incorrect because the time range is 7 days. Option D is incorrect because the query correctly uses 'extend'.
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.
✗
The 'extend' operator fails because 'Entities' array is empty.
Why it's wrong here
If empty, the query would still run but with null values.
✓
The alert names do not contain the strings 'MFA' or 'Suspicious sign-in'.
Why this is correct
If alert names use different terms, the filter will exclude them.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The TimeGenerated filter is too restrictive; alerts older than 7 days are excluded.
Why it's wrong here
The query includes alerts from the last 7 days.
✗
The 'has' operator is case-sensitive and the alert names are in uppercase.
Why it's wrong here
'has' is case-insensitive.
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 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.
Identify which SC-900 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.
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: The alert names do not contain the strings 'MFA' or 'Suspicious sign-in'. — The query uses the 'has' operator which is case-insensitive, but the alert names in the environment might use different wording (e.g., 'Azure AD MFA' instead of 'MFA'). Option A is incorrect because the query uses 'has' which is case-insensitive. Option C is incorrect because the time range is 7 days. Option D is incorrect because the query correctly uses 'extend'.
What should I do if I get this SC-900 question wrong?
Identify which SC-900 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: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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