SC-900 Describe the capabilities of Microsoft Entra Practice Question
This SC-900 practice question tests your understanding of describe the capabilities of microsoft entra. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Your company is implementing a hybrid identity solution with Microsoft Entra ID. Users report that they can sign in to Microsoft 365 but cannot access on-premises applications that are configured for integrated Windows authentication. You need to ensure seamless single sign-on (SSO) for both cloud and on-premises resources. What should you implement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable Microsoft Entra seamless SSO.
Microsoft Entra seamless SSO (Seamless SSO) is the correct choice because it automatically signs users in when they are on corporate devices connected to the corporate network, using Kerberos delegation to provide single sign-on for both cloud resources (like Microsoft 365) and on-premises applications configured for Integrated Windows Authentication (IWA). This eliminates the need for users to re-enter credentials when accessing on-premises apps after authenticating to the cloud.
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.
✗
Implement Passthrough Authentication.
Why it's wrong here
Passthrough Authentication alone doesn't enable seamless SSO for on-premises resources.
✗
Deploy Active Directory Federation Services (AD FS).
Why it's wrong here
AD FS is a more complex federation solution and not necessary for this requirement.
✓
Enable Microsoft Entra seamless SSO.
Why this is correct
Seamless SSO provides automatic sign-in for domain-joined devices, covering both cloud and on-premises.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure password hash synchronization.
Why it's wrong here
Password hash sync does not provide SSO for on-premises apps.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Passthrough Authentication or password hash synchronization with providing SSO for on-premises applications, but neither includes the Kerberos delegation required for Integrated Windows Authentication, which is the specific need in this scenario.
Detailed technical explanation
How to think about this question
Seamless SSO works by creating a computer account named 'AZUREADSSOACC' in the on-premises Active Directory, which is then used to issue Kerberos tickets to users. When a user accesses a cloud resource, the browser sends the Kerberos ticket to Microsoft Entra ID, which validates it and issues a session token. This mechanism relies on the user's device being domain-joined and the internal DNS resolving the Microsoft Entra ID endpoints to the on-premises domain controller, making it transparent and zero-touch for end users.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-900 question in full detail.
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: Enable Microsoft Entra seamless SSO. — Microsoft Entra seamless SSO (Seamless SSO) is the correct choice because it automatically signs users in when they are on corporate devices connected to the corporate network, using Kerberos delegation to provide single sign-on for both cloud resources (like Microsoft 365) and on-premises applications configured for Integrated Windows Authentication (IWA). This eliminates the need for users to re-enter credentials when accessing on-premises apps after authenticating to the cloud.
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.
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Question Discussion
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