SC-900 Practice Question: Describe the concepts of security, compliance, and identity
This SC-900 practice question tests your understanding of describe the concepts of security, compliance, and identity. 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 user logs into the company's network using their username and password. After successful login, the user attempts to open a financial report but receives an access denied message because they are not a member of the 'Finance' security group. Which security concept is best illustrated by the access denial?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Why wrong: Authentication verifies identity but does not control access to specific resources based on permissions.
B
Authorization
Authorization determines what a user can access based on permissions and group membership, which is exactly why the user was denied access.
C
Accounting
Why wrong: Accounting involves tracking and logging user activities for auditing, not managing resource access permissions.
D
Non-repudiation
Why wrong: Non-repudiation ensures that a user cannot deny having performed an action (e.g., via digital signatures), which is not related to access control.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Authorization
The access denial occurs because the user lacks the necessary permissions to open the financial report, even though their identity was verified. This is the core function of authorization, which determines what resources an authenticated user can access. In this scenario, the user is authenticated but not authorized to access the report due to missing group membership.
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.
✗
Authentication
Why it's wrong here
Authentication verifies identity but does not control access to specific resources based on permissions.
✓
Authorization
Why this is correct
Authorization determines what a user can access based on permissions and group membership, which is exactly why the user was denied access.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Accounting
Why it's wrong here
Accounting involves tracking and logging user activities for auditing, not managing resource access permissions.
✗
Non-repudiation
Why it's wrong here
Non-repudiation ensures that a user cannot deny having performed an action (e.g., via digital signatures), which is not related to access control.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing authentication (verifying identity) with authorization (granting permissions), leading candidates to select 'Authentication' because they focus on the successful login rather than the subsequent access denial.
Detailed technical explanation
How to think about this question
Authorization in Microsoft environments is typically enforced via Access Control Lists (ACLs) on resources, such as NTFS permissions or SharePoint item-level permissions. The user's access token, generated after authentication, contains Security Identifiers (SIDs) for all groups the user belongs to; the resource manager compares these SIDs against the ACL to grant or deny access. In Azure AD, authorization can also involve role-based access control (RBAC) or conditional access policies that evaluate attributes beyond group membership.
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 concepts of security, compliance, and identity — This question tests Describe the concepts of security, compliance, and identity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Authorization — The access denial occurs because the user lacks the necessary permissions to open the financial report, even though their identity was verified. This is the core function of authorization, which determines what resources an authenticated user can access. In this scenario, the user is authenticated but not authorized to access the report due to missing group membership.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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