Question 813 of 953

Implement a secure environment →mediumMultiple ChoiceObjective-mapped

Quick Answer

The correct approach is to create a contained database user mapped to the Microsoft Entra identity, then grant SELECT on the Sales schema and deny SELECT on all other schemas. This works because Azure SQL Database permissions are hierarchical: granting schema-level SELECT gives read access only to objects within that schema, while explicitly denying SELECT on all other schemas overrides any implicit permissions the user might inherit from roles like public, enforcing the least-privilege principle. On the DP-300 exam, this scenario tests your understanding of granular schema-level permission control versus fixed database roles—a common trap is assuming that simply granting SELECT on the Sales schema is enough, forgetting that the public role often grants read access to other schemas by default. A helpful memory tip is “Grant the door, deny the walls”: grant access only to the specific schema you want, then explicitly deny everything else to block any inherited permissions.

DP-300 Implement a secure environment Practice Question

This DP-300 practice question tests your understanding of implement a secure environment. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 organization uses Azure SQL Database with Microsoft Entra ID authentication. You need to ensure that a specific user can only read data from the Sales schema. The user should not be able to modify any data. What should you do?

Question 1mediummultiple choice

Full question →

A
Create a contained user mapped to the Microsoft Entra identity, then grant SELECT on the Sales schema to the user, and deny SELECT on all other schemas.
This explicitly grants SELECT on Sales schema and denies on others, achieving the requirement.
B
Create a contained user mapped to the Microsoft Entra identity and add the user to the db_datareader role.
Why wrong: db_datareader grants read access to all tables in the database, not just Sales schema.
C
Create a contained user mapped to the Microsoft Entra identity and add the user to the db_denydatawriter role.
Why wrong: db_denydatawriter prevents writes but still allows reads on all schemas.
D
Create a contained user mapped to the Microsoft Entra identity and add the user to the db_datareader role, then deny SELECT on all schemas except Sales.
Why wrong: db_datareader already grants SELECT on all schemas; denying SELECT on other schemas would conflict but still allow reads via role membership.

Full breakdown with real-world context →

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

✓

Create a contained user mapped to the Microsoft Entra identity, then grant SELECT on the Sales schema to the user, and deny SELECT on all other schemas.

Option A is correct because it creates a contained database user mapped to the Microsoft Entra identity, then explicitly grants SELECT on the Sales schema. This ensures the user can read data only from that schema. Denying SELECT on all other schemas removes any implicit permissions (such as those from the public role) and enforces the least-privilege principle. This approach is schema-level permission control, which is more granular than fixed database roles.

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.

✓
Create a contained user mapped to the Microsoft Entra identity, then grant SELECT on the Sales schema to the user, and deny SELECT on all other schemas.
Why this is correct
This explicitly grants SELECT on Sales schema and denies on others, achieving the requirement.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a contained user mapped to the Microsoft Entra identity and add the user to the db_datareader role.
Why it's wrong here
db_datareader grants read access to all tables in the database, not just Sales schema.
✗
Create a contained user mapped to the Microsoft Entra identity and add the user to the db_denydatawriter role.
Why it's wrong here
db_denydatawriter prevents writes but still allows reads on all schemas.
✗
Create a contained user mapped to the Microsoft Entra identity and add the user to the db_datareader role, then deny SELECT on all schemas except Sales.
Why it's wrong here
db_datareader already grants SELECT on all schemas; denying SELECT on other schemas would conflict but still allow reads via role membership.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often assume fixed database roles like db_datareader or db_denydatawriter are sufficient, but they either grant too much access or fail to grant the required read access, whereas schema-level permissions with explicit DENY provide precise control.

Detailed technical explanation

How to think about this question

In Azure SQL Database, permissions are evaluated using a precedence model where DENY overrides GRANT at the same scope. When using schema-level permissions, a GRANT SELECT on a schema gives read access to all objects within that schema, while a DENY on other schemas explicitly blocks access. Contained users are required for Microsoft Entra ID authentication because they store the authentication identity within the database, allowing the user to be authenticated directly without a server-level login. This is essential for Azure SQL Database single databases and elastic pools.

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.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this DP-300 question test?

Implement a secure environment — This question tests Implement a secure environment — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Create a contained user mapped to the Microsoft Entra identity, then grant SELECT on the Sales schema to the user, and deny SELECT on all other schemas. — Option A is correct because it creates a contained database user mapped to the Microsoft Entra identity, then explicitly grants SELECT on the Sales schema. This ensures the user can read data only from that schema. Denying SELECT on all other schemas removes any implicit permissions (such as those from the public role) and enforces the least-privilege principle. This approach is schema-level permission control, which is more granular than fixed database roles.

What should I do if I get this DP-300 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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