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DP-203 Practice Question: Refer to the exhibit
Network Topology
Refer to the exhibit. A user with Storage Blob Data Reader role on the container rawdata cannot list files under /2023/07/. What is the most likely reason?
⚠ Common exam trap
Candidates often assume the Storage Blob Data Reader role is sufficient for all read operations, but Azure Data Lake Storage Gen2 requires explicit ACL execute permission on directories for listing and traversal, which is a common point of confusion between flat blob storage and hierarchical namespace storage.
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
✓
The directory ACL does not grant 'execute' permission to the user
In Azure Data Lake Storage Gen2, listing files in a directory requires both read (r) and execute (x) permissions on the directory itself. The Storage Blob Data Reader role grants read access to blob data but does not automatically grant the execute permission on directory ACLs. Without execute permission on the /2023/07/ directory, the user cannot traverse or list its contents, even though they can read blobs they know the path to.
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 directory ACL does not grant 'execute' permission to the user
Why this is correct
To list directory contents, the user needs execute permission on the directory. 'other' has no permissions, so the user (not being owner or group) is denied.
- ✗
The user does not have Storage Blob Data Contributor role
Why it's wrong here
Reader role is sufficient to list files if ACLs allow; the issue is ACLs, not role level.
- ✗
The user is not the owner of the directory
Why it's wrong here
Ownership is not required for listing; appropriate ACLs are needed.
- ✗
The container name is misspelled
Why it's wrong here
The exhibit shows correct container name; error is due to ACLs.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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