The correct answer is read and write access because ADLS Gen2 RBAC permissions are additive across scopes, meaning that a role assigned at a higher scope like the root account combines with any roles at lower scopes rather than being overridden. In this scenario, user@contoso.com inherits the Storage Blob Data Contributor role from the root scope, which grants full read and write access to all directories, including /data/analytics/. The Reader role assigned directly at the directory scope does not subtract or block the broader contributor permissions—RBAC simply sums all effective permissions. On the DP-203 exam, this concept tests your understanding that Azure RBAC is additive, not hierarchical like POSIX ACLs, and a common trap is assuming a more restrictive role at a lower scope can override a broader role above. A useful memory tip is “RBAC stacks, it never subtracts”—think of permissions piling up like layers, where the highest privilege always wins.
DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
This DP-203 practice question tests your understanding of secure, monitor, and optimize data storage and data processing. 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.
Exhibit
Refer to the exhibit.
{
"permissions": [
{
"principal": "user@contoso.com",
"role": "Storage Blob Data Contributor",
"scope": "/"
},
{
"principal": "group-analysts@contoso.com",
"role": "Storage Blob Data Reader",
"scope": "/data/analytics/"
}
]
}
Refer to the exhibit. You have an Azure Data Lake Storage Gen2 account with hierarchical namespace enabled. The exhibit shows an Azure CLI command output that lists access permissions. User user@contoso.com is a member of group-analysts@contoso.com. What level of access does user@contoso.com have to the /data/analytics/ directory?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Read and write access
Option C is correct because RBAC permissions are additive. The user has Storage Blob Data Contributor at the root scope, which grants read/write access to all directories. The reader role at the directory scope does not override the broader contributor role. Option A is wrong because the user has write access via the root scope. Option B is wrong because the user has read access from the root scope already. Option D is wrong because the user has explicit permissions.
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.
✗
Access denied because of the directory-level reader role
Why it's wrong here
RBAC permissions are additive, not deny-by-default; the reader role does not deny write access.
✗
Read-only access
Why it's wrong here
The user has Storage Blob Data Contributor at root, which includes write access.
✓
Read and write access
Why this is correct
The user's root-level contributor role provides read and write access to all directories.
Related concept
Read the scenario before looking for a memorised answer.
✗
No access
Why it's wrong here
The user has explicit permissions at root scope, so they have access.
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 DP-203 question in full detail.
Identify which DP-203 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.
Secure, monitor, and optimize data storage and data processing — This question tests Secure, monitor, and optimize data storage and data processing — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Read and write access — Option C is correct because RBAC permissions are additive. The user has Storage Blob Data Contributor at the root scope, which grants read/write access to all directories. The reader role at the directory scope does not override the broader contributor role. Option A is wrong because the user has write access via the root scope. Option B is wrong because the user has read access from the root scope already. Option D is wrong because the user has explicit permissions.
What should I do if I get this DP-203 question wrong?
Identify which DP-203 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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