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Describe Microsoft 365 apps and services →mediumMultiple ChoiceObjective-mapped

MS-900 Describe Microsoft 365 apps and services Practice Question

This MS-900 practice question tests your understanding of describe microsoft 365 apps and services. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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

{
  "displayName": "Block high-risk sign-ins",
  "conditions": {
    "signInRiskLevel": "high",
    "applications": ["Office365"]
  },
  "grantControls": {
    "builtInControls": ["block"]
  }
}

Refer to the exhibit. You are reviewing a Conditional Access policy in Microsoft Entra ID. What will this policy do?

Question 1mediummultiple choice
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Exhibit

{
  "displayName": "Block high-risk sign-ins",
  "conditions": {
    "signInRiskLevel": "high",
    "applications": ["Office365"]
  },
  "grantControls": {
    "builtInControls": ["block"]
  }
}

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

✓

Blocks access to Office 365 apps when the sign-in risk is high

The exhibit shows a Conditional Access policy configured with the condition 'Sign-in risk: High' and the control 'Block access'. This combination means that when Microsoft Entra ID detects a high-risk sign-in (e.g., from an anonymous IP address or compromised credentials), access to the targeted cloud apps is denied. The policy specifically targets Office 365 apps (as indicated in the 'Cloud apps or actions' assignment), so it blocks access to those apps when the sign-in risk is high.

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.

  • ✗

    Allows access but logs the sign-in risk

    Why it's wrong here

    The policy blocks access; it does not allow.

  • ✗

    Requires multi-factor authentication for high-risk sign-ins

    Why it's wrong here

    The grant control is 'block', not MFA.

  • ✗

    Blocks access to all cloud apps when sign-in risk is high

    Why it's wrong here

    The policy applies only to Office 365 apps.

  • ✓

    Blocks access to Office 365 apps when the sign-in risk is high

    Why this is correct

    The policy blocks high-risk sign-ins for Office 365.

    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 often confuse 'Block access' with 'Require MFA' or assume the policy applies to all cloud apps, when the exhibit clearly shows the scope is limited to Office 365 apps.

Detailed technical explanation

How to think about this question

Conditional Access policies in Microsoft Entra ID evaluate conditions like sign-in risk (calculated using real-time signals from Microsoft's security graph) and apply controls such as block or grant with MFA. The sign-in risk level is determined by Microsoft's risk detection algorithms, which analyze factors like impossible travel, leaked credentials, or anonymous IP addresses. In a real-world scenario, this policy would prevent a user from accessing Exchange Online or SharePoint Online if their sign-in is flagged as high risk, while still allowing access to other apps not in the policy scope.

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 MS-900 question test?

Describe Microsoft 365 apps and services — This question tests Describe Microsoft 365 apps and services — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Blocks access to Office 365 apps when the sign-in risk is high — The exhibit shows a Conditional Access policy configured with the condition 'Sign-in risk: High' and the control 'Block access'. This combination means that when Microsoft Entra ID detects a high-risk sign-in (e.g., from an anonymous IP address or compromised credentials), access to the targeted cloud apps is denied. The policy specifically targets Office 365 apps (as indicated in the 'Cloud apps or actions' assignment), so it blocks access to those apps when the sign-in risk is high.

What should I do if I get this MS-900 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: Jun 24, 2026

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This MS-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MS-900 exam.