Question 365 of 1,639
Respond to security incidentsmediumMultiple ChoiceObjective-mapped

Detecting Disabled User Sign-ins with KQL

This SC-200 practice question tests your understanding of respond to security incidents. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
```kql
let TimeRange = 7d;
let Threshold = 100;
SigninLogs
| where TimeGenerated > ago(TimeRange)
| where ResultType == "50057"
| summarize Attempts = count() by UserPrincipalName, IPAddress
| where Attempts > Threshold
```

Refer to the exhibit. The KQL query is used in a Microsoft Sentinel scheduled alert rule. What scenario does this query detect?

Exhibit

Refer to the exhibit.
```kql
let TimeRange = 7d;
let Threshold = 100;
SigninLogs
| where TimeGenerated > ago(TimeRange)
| where ResultType == "50057"
| summarize Attempts = count() by UserPrincipalName, IPAddress
| where Attempts > Threshold
```

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

Attempts to sign in with disabled user accounts.

The KQL query filters for `ResultType == 50057`, which specifically indicates a sign-in attempt by a disabled user account in Azure AD. This result type is unique to disabled accounts and does not cover MFA denials (53003), invalid password attempts (50126), or brute force patterns. Therefore, the query detects attempts to sign in with disabled user accounts.

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.

  • Multiple MFA denial events from a single user.

    Why it's wrong here

    MFA denials have ResultType 500121 or similar.

  • Brute force attacks against Azure AD accounts using invalid passwords.

    Why it's wrong here

    Invalid password has a different ResultType (50126).

  • Attempts to sign in with disabled user accounts.

    Why this is correct

    ResultType 50057 corresponds to 'User account is disabled'.

    Related concept

    Read the scenario before looking for a memorised answer.

  • Brute force attacks from a single IP address against multiple accounts.

    Why it's wrong here

    The query groups by user and IP, but the specific result type indicates disabled accounts, not brute force generally.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates confuse the generic 'sign-in failure' concept with the specific `ResultType` code 50057, assuming any failure could indicate brute force or MFA issues, when in fact each code maps to a distinct Azure AD error condition.

Trap categories for this question

  • Similar concept trap

    MFA denials have ResultType 500121 or similar.

Detailed technical explanation

How to think about this question

Azure AD sign-in logs use `ResultType` codes to categorize authentication outcomes. Code 50057 corresponds to 'User account is disabled' — a state where the account is explicitly disabled in Azure AD, preventing any sign-in regardless of password correctness. This differs from account lockout (50053) or expired password (50055). In real-world scenarios, attackers may probe for disabled accounts to identify stale or orphaned accounts that could be re-enabled for lateral movement.

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

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this SC-200 question test?

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: Attempts to sign in with disabled user accounts. — The KQL query filters for `ResultType == 50057`, which specifically indicates a sign-in attempt by a disabled user account in Azure AD. This result type is unique to disabled accounts and does not cover MFA denials (53003), invalid password attempts (50126), or brute force patterns. Therefore, the query detects attempts to sign in with disabled user accounts.

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.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jul 4, 2026

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