- A
Conditional Access
Conditional Access can use named locations to block sign-ins from specific IP ranges and also block access from anonymous IP addresses using the 'Anonymous IP' location condition.
- B
Identity Protection
Why wrong: Identity Protection detects risky sign-ins based on risk signals but cannot directly block sign-ins from a static list of malicious IP addresses.
- C
Privileged Identity Management
Why wrong: Privileged Identity Management provides just-in-time privileged access and role activation, not IP-based blocking.
- D
Access Reviews
Why wrong: Access Reviews are used for reviewing and certifying user access to resources, not for blocking sign-in attempts based on IP address.
Question 1,338 of 1,411
Block Sign-ins from Malicious IPs and Anonymous Proxies with Conditional Access
This SC-900 practice question tests your understanding of describe the capabilities of microsoft entra. 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.
A company uses Microsoft Entra ID. The security team needs to block all sign-in attempts from a list of known malicious IP addresses. They also want to block sign-ins that originate from anonymous proxy services. Which Microsoft Entra capability should they configure to meet these requirements?
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
✓
Conditional Access
Conditional Access policies in Microsoft Entra ID allow administrators to define conditions under which sign-ins are blocked or allowed. By configuring a policy that includes 'Locations' as a condition, you can specify a list of known malicious IP addresses and also enable the 'Anonymous IP address' risk detection to block sign-ins from anonymous proxy services. This directly meets the requirement to block sign-ins from both specific IPs and anonymous proxies.
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.
- ✓
Conditional Access
Why this is correct
Conditional Access can use named locations to block sign-ins from specific IP ranges and also block access from anonymous IP addresses using the 'Anonymous IP' location condition.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Identity Protection
Why it's wrong here
Identity Protection detects risky sign-ins based on risk signals but cannot directly block sign-ins from a static list of malicious IP addresses.
- ✗
Privileged Identity Management
Why it's wrong here
Privileged Identity Management provides just-in-time privileged access and role activation, not IP-based blocking.
- ✗
Access Reviews
Why it's wrong here
Access Reviews are used for reviewing and certifying user access to resources, not for blocking sign-in attempts based on IP address.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Identity Protection’s risk detection capabilities with the enforcement mechanism, mistakenly thinking Identity Protection alone can block sign-ins, when in fact it only identifies risks and requires Conditional Access to enforce the block.
Detailed technical explanation
How to think about this question
Conditional Access policies evaluate sign-in signals such as IP address ranges (via named locations) and risk detections (like anonymous IP address) before granting access. The 'Anonymous IP address' risk detection is part of Microsoft Entra Identity Protection’s risk events, but the actual enforcement—blocking the sign-in—requires a Conditional Access policy that includes that risk level as a condition. Under the hood, Conditional Access uses the OAuth 2.0 authorization framework and evaluates policy at the time of token issuance, allowing granular control without modifying the application itself.
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.
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Describe the capabilities of Microsoft Entra — study guide chapter
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FAQ
Questions learners often ask
What does this SC-900 question test?
Describe the capabilities of Microsoft Entra — This question tests Describe the capabilities of Microsoft Entra — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Conditional Access — Conditional Access policies in Microsoft Entra ID allow administrators to define conditions under which sign-ins are blocked or allowed. By configuring a policy that includes 'Locations' as a condition, you can specify a list of known malicious IP addresses and also enable the 'Anonymous IP address' risk detection to block sign-ins from anonymous proxy services. This directly meets the requirement to block sign-ins from both specific IPs and anonymous proxies.
What should I do if I get this SC-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.
About these practice questions
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Same concept, more angles
2 more ways this is tested on SC-900
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Your organization uses Microsoft Entra ID and needs to block sign-ins from legacy authentication protocols to reduce risk. Which feature should you use?
medium- A.Security defaults
- B.Privileged Identity Management
- C.Identity Protection
- ✓ D.Conditional Access
Why D: Conditional Access policies in Microsoft Entra ID allow you to block sign-ins from legacy authentication protocols by targeting client apps that use protocols like POP3, IMAP, SMTP, or older Office clients that do not support modern authentication. This is the correct feature because it provides granular, policy-based control to explicitly deny authentication requests that use legacy protocols, directly addressing the requirement to reduce risk from these less secure methods.
Variation 2. Your organization wants to ensure that users cannot install applications from the Microsoft Store on their company-managed Windows devices. Which Microsoft Entra ID feature should you combine with Microsoft Intune to enforce this?
easy- ✓ A.Conditional Access
- B.Privileged Identity Management
- C.Multifactor authentication
- D.Identity Protection
Why A: Conditional Access (A) is the correct feature because it can be configured with Intune to enforce device compliance. By creating a Conditional Access policy that requires devices to be marked as compliant by Intune, and combining with an Intune device restriction profile that blocks Microsoft Store app installations, the organization can prevent users from installing apps from the Store. Privileged Identity Management (B) is for managing admin roles. Multifactor authentication (C) is for additional verification. Identity Protection (D) is for detecting identity risks. Therefore, only Conditional Access integrates with Intune for device-level policies to control app installations.
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Last reviewed: Jun 11, 2026
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