SC-200 Manage a security operations environment Practice Question
This SC-200 practice question tests your understanding of manage a security operations environment. 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.
Exhibit
Refer to the exhibit.
```kusto
SecurityEvent
| where EventID == 4625
| where Account !startswith "ANONYMOUS LOGON"
| summarize FailedLogins = count() by Account, IPAddress, bin(TimeGenerated, 5m)
| where FailedLogins > 10
```
Refer to the exhibit. You are analyzing a KQL query in Microsoft Sentinel that returns accounts with more than 10 failed logins within 5 minutes. The query is not returning any results even though you know there have been multiple failed logins. What is the most likely reason?
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 filter condition 'Account !startswith "ANONYMOUS LOGON"' is case-sensitive and may be excluding valid results
Option D is correct because the `!startswith` operator in KQL is case-sensitive by default. If the actual account name in the SecurityEvent table is stored as 'ANONYMOUS LOGON' with a different case (e.g., 'Anonymous Logon' or 'anonymous logon'), the filter will exclude those rows, causing the query to return no results even though failed logins occurred. This is a common pitfall when using string comparison operators in KQL without considering case sensitivity.
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 'startswith' operator is not a valid KQL operator
Why it's wrong here
'startswith' is a valid KQL operator.
✗
The 'bin' function is used incorrectly
Why it's wrong here
The 'bin' function is correctly used for time grouping.
✗
The query syntax requires a 'let' statement
Why it's wrong here
The query is syntactically correct without 'let'.
✓
The filter condition 'Account !startswith "ANONYMOUS LOGON"' is case-sensitive and may be excluding valid results
Why this is correct
The 'startswith' operator is case-sensitive; 'ANONYMOUS LOGON' in the event may have different casing.
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.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume string operators in KQL are case-insensitive by default, when in fact they are case-sensitive, leading them to overlook the filter's exclusion of valid results.
Detailed technical explanation
How to think about this question
In KQL, string operators like `startswith`, `contains`, and `==` are case-sensitive by default. To perform case-insensitive comparisons, you must use the `~` prefix (e.g., `Account !startswith_cs` for case-sensitive or `Account !startswith~` for case-insensitive). The SecurityEvent table in Microsoft Sentinel stores account names as they appear in Windows Event Logs (Event ID 4625), which often use 'ANONYMOUS LOGON' in uppercase, but variations can occur due to domain or system configuration. A real-world scenario is when a domain controller logs the account name in mixed case, causing the filter to silently drop relevant events.
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-200 question in full detail.
Manage a security operations environment — This question tests Manage a security operations environment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The filter condition 'Account !startswith "ANONYMOUS LOGON"' is case-sensitive and may be excluding valid results — Option D is correct because the `!startswith` operator in KQL is case-sensitive by default. If the actual account name in the SecurityEvent table is stored as 'ANONYMOUS LOGON' with a different case (e.g., 'Anonymous Logon' or 'anonymous logon'), the filter will exclude those rows, causing the query to return no results even though failed logins occurred. This is a common pitfall when using string comparison operators in KQL without considering case sensitivity.
What should I do if I get this SC-200 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: "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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