The correct answer is that the role does not include read permission on the storage account resource. This is because Azure RBAC separates control plane permissions, which manage the resource itself, from data plane permissions, which manage data inside the resource. The custom role only includes dataActions for reading blobs, but lacks the control plane action Microsoft.Storage/storageAccounts/read, which is required for the user to see the storage account listed in the Azure portal. On the DP-900 exam, this tests your understanding of the distinction between control plane and data plane roles, a common trap where candidates assume blob-level access alone grants portal visibility. Remember the memory tip: "To see the box, you need the key to the box, not just the key to the items inside."
DP-900 Describe core data concepts Practice Question
This DP-900 practice question tests your understanding of describe core data concepts. 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.
Refer to the exhibit. You are configuring a custom role in Azure RBAC for a team that needs to read and list blobs in a storage account. The JSON snippet shows the permissions assigned. After assigning this role to a user, they report they cannot see the storage account in the Azure portal. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The role does not include read permission on the storage account resource.
Option C is correct because the role only includes dataActions for blob read, but lacks read access to the storage account resource itself (e.g., Microsoft.Storage/storageAccounts/read). To see the storage account in the portal, the user needs read permissions on the resource. Option A is wrong because the role is scoped to the storage account, not subscription level. Option B is wrong because portal access does not require Contributor role; Reader role suffices. Option D is wrong because dataActions are correctly used for blob-level 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.
✗
The dataActions should be actions instead of dataActions.
Why it's wrong here
dataActions are correct for blob operations.
✓
The role does not include read permission on the storage account resource.
Why this is correct
Missing Microsoft.Storage/storageAccounts/read action prevents seeing the account.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The role is not assigned at the subscription scope.
Why it's wrong here
Assignment at resource group or storage account scope is sufficient.
✗
The user needs the Contributor role to view the storage account.
Why it's wrong here
Reader role is sufficient to view resources.
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-900 question in full detail.
Identify which DP-900 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.
Describe core data concepts — This question tests Describe core data concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The role does not include read permission on the storage account resource. — Option C is correct because the role only includes dataActions for blob read, but lacks read access to the storage account resource itself (e.g., Microsoft.Storage/storageAccounts/read). To see the storage account in the portal, the user needs read permissions on the resource. Option A is wrong because the role is scoped to the storage account, not subscription level. Option B is wrong because portal access does not require Contributor role; Reader role suffices. Option D is wrong because dataActions are correctly used for blob-level permissions.
What should I do if I get this DP-900 question wrong?
Identify which DP-900 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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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