MS-102 Conditional Access policy modes Practice Question
Exhibit
Refer to the exhibit.
{
"policy": {
"displayName": "Block legacy authentication",
"state": "enabled",
"conditions": {
"clientAppTypes": [
"exchangeActiveSync",
"other"
],
"signInRiskLevels": [],
"userRiskLevels": [],
"applications": {
"includeApplications": [
"All"
]
},
"users": {
"includeUsers": [
"All"
]
}
},
"grantControls": {
"builtInControls": [
"block"
],
"operator": "OR"
}
}
}Refer to the exhibit. You are reviewing a Conditional Access policy JSON. The policy is intended to block legacy authentication. However, users are still able to connect using Exchange ActiveSync. What is the most likely reason?
⚠ Common exam trap
A common trap is that candidates mistake report-only mode for enforcement. Report-only mode is used for testing and does not block access. Always verify the policy mode when troubleshooting Conditional Access policy effects.
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
✓
The policy is configured in 'report-only' mode instead of 'enforce'
The policy is configured in 'report-only' mode. In report-only mode, Conditional Access policies are evaluated but not enforced. Users can still connect using legacy authentication because the policy does not block access. To block legacy authentication, the policy must be set to 'enforce' mode. Additionally, the client apps condition should include 'Exchange ActiveSync clients' and 'Other clients' to specifically target legacy authentication protocols.
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 policy is missing the 'browser' and 'mobileAppsAndDesktopClient' client app types
Why it's wrong here
Missing 'browser' and 'mobileAppsAndDesktopClient' is not the primary reason. These client app types are for modern authentication. For blocking legacy auth, you need to include 'Exchange ActiveSync clients' and 'Other clients'.
- ✗
The grant control operator 'OR' should be 'AND'
Why it's wrong here
The grant control operator 'OR' vs 'AND' affects how multiple controls are applied, but it does not prevent blocking. The policy may still block if the mode is enforce and client apps are correct.
- ✓
The policy is configured in 'report-only' mode instead of 'enforce'
Why this is correct
If the policy is in report-only mode, it will not enforce the block, allowing legacy connections to succeed. This is the most likely reason.
- ✗
The policy is missing a condition for 'device platforms' to target iOS and Android
Why it's wrong here
Missing device platform condition is not directly related to legacy authentication blocking. The policy would still apply to all devices unless specified.
Go deeper
Related to this question
Learn chapter
PHS vs Pass-Through Authentication vs Federation
Key term
Policy
A policy is a set of rules or guidelines that defines how an organization manages, secures, and operates its IT systems and services.
Key term
Conditional Access policy
A Conditional Access policy is a set of rules in Microsoft Entra ID that automatically grants or blocks access to cloud apps based on signals like user identity, location, device health, and risk level.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MS-102 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-102 exam.