The answer is to enable Microsoft Entra B2B collaboration and configure the application to accept tokens from partner tenants. This is correct because B2B collaboration allows external partner users to access your Azure App Service using their own home tenant credentials, without requiring you to create separate user objects in your directory—the core requirement of the scenario. On the Microsoft Cybersecurity Architect exam, this question tests your ability to distinguish between B2B (for organizational partners) and B2C (for customers), and to recognize that Conditional Access policies or application permissions are irrelevant here since they either need user objects or address app-to-app scenarios. A common trap is confusing B2B with B2C or assuming you must provision guest accounts; remember, B2B collaboration lets the partner’s identity provider handle authentication while your app simply trusts their tokens. Memory tip: B2B = Bring your own identity for Business partners, no objects needed.
SC-100 Practice Question: Design security solutions for applications and data
This SC-100 practice question tests your understanding of design security solutions for applications and data. 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.
You are designing a solution to protect an Azure App Service web app that authenticates users via Microsoft Entra ID. The app needs to ensure that only users from specific external partner organizations can access it. You do not want to create user objects for each partner user in your tenant. What should you configure?
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 B2B collaboration and configure the application to accept tokens from partner tenants.
B2B collaboration allows external users to use their own identities without creating separate user objects. B2C is for customer-facing apps. Conditional Access policies can restrict access but require user objects. Application permissions are for app-to-app scenarios. Option D is correct.
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.
✗
Configure a Conditional Access policy that restricts access to partners' IP ranges.
Why it's wrong here
IP-based policies are not reliable for external users and do not authenticate.
✓
Enable Microsoft Entra B2B collaboration and configure the application to accept tokens from partner tenants.
Why this is correct
B2B allows external users to authenticate using their own tenants without creating user objects.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create guest user accounts for each external user and assign them to a group.
Why it's wrong here
This requires creating user objects, which is not desired.
✗
Use Azure AD B2C custom policies to allow partner authentication.
Why it's wrong here
B2C is for customer identity, not B2B collaboration.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-100 question in full detail.
Identify which SC-100 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Design security solutions for applications and data — This question tests Design security solutions for applications and data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable Microsoft Entra B2B collaboration and configure the application to accept tokens from partner tenants. — B2B collaboration allows external users to use their own identities without creating separate user objects. B2C is for customer-facing apps. Conditional Access policies can restrict access but require user objects. Application permissions are for app-to-app scenarios. Option D is correct.
What should I do if I get this SC-100 question wrong?
Identify which SC-100 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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