DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
A company uses Azure Data Lake Storage Gen2 with hierarchical namespace enabled. They need to restrict a specific application's access to only write files in a particular directory without being able to read or list files. Which type of permission should be assigned?
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
✓
Configure an access control list (ACL) that grants execute and write permissions to the application's service principal.
Azure Data Lake Storage Gen2 uses POSIX-style ACLs that allow granular permissions. To restrict an application to write-only access without read or list, you grant execute (for directory traversal) and write permissions on the target directory via an ACL entry for the application's service principal. Option A is incorrect because firewall rules control network access, not data permissions. Option C is incorrect because a SAS with list permission would allow listing; write-only SAS is not easily achievable at directory level. Option D is incorrect because the Storage Blob Data Contributor role at the account level grants read, write, and delete permissions, not write-only.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure a firewall rule to allow only the application's IP address.
Why it's wrong here
Firewall rules do not control read/write permissions.
- ✓
Configure an access control list (ACL) that grants execute and write permissions to the application's service principal.
Why this is correct
ACLs allow fine-grained write-only access without read or list.
- ✗
Generate a shared access signature (SAS) with write and list permissions.
Why it's wrong here
SAS can be scoped, but write-only is not typical.
- ✗
Assign the Storage Blob Data Contributor role at the storage account level.
Why it's wrong here
This role includes read and list permissions.
Visual reference
Go deeper
Related to this question
About these practice questions
This DP-203 question is part of Courseiva's 760-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DP-203 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DP-203 exam.