CCSP Cloud Data Security Practice Question
An organization wants to share a large file from a cloud storage bucket with an external partner for a limited time. They need to ensure that the partner can only access the specific file and that the access expires automatically. Which method should they use?
⚠ Common exam trap
The trap is overlooking the need for automatic expiration and specific file access. Candidates might choose making the bucket public for simplicity, but that fails security and expiration requirements.
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
✓
Use a pre-signed URL
A pre-signed URL provides temporary access to a specific object in a cloud storage bucket, with an expiration time. It grants the external partner permission to download the file without needing a cloud account, and access automatically expires. This meets the requirements of limited-time, specific-file access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Make the bucket public
Why it's wrong here
A public bucket grants anonymous read to every object and never expires, so the partner could access far more than the one file, indefinitely. Public access is tempting for frictionless sharing without credential exchange, and would fit genuinely non-sensitive content intended for open distribution.
- ✗
Create a new cloud provider user account for the partner and attach a custom policy to the bucket
Why it's wrong here
Creating a partner user account grants standing credentials and bucket-level access beyond the single file, and nothing expires automatically. It is tempting because IAM policies scope permissions, but a pre-signed URL grants time-limited access to one specific object without provisioning identities, matching the limited-time, single-file requirement.
- ✗
Use cross-region replication
Why it's wrong here
Cross-region replication copies objects to another region for durability and locality; it neither scopes access to a single file nor enforces any expiry. It is tempting because replication does move data to recipients' regions, and would be correct for disaster recovery or latency reduction, not time-limited sharing.
- ✓
Use a pre-signed URL
Why this is correct
A pre-signed URL embeds temporary credentials in the link itself, granting time-limited access to one specific object without exposing bucket permissions or requiring the partner to hold Microsoft Entra ID credentials. The expiry parameter satisfies the automatic revocation constraint, while scoping to a single object meets the least-privilege requirement for external sharing.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official ISC2 exam blueprint
This CCSP practice question is part of Courseiva's free ISC2 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 CCSP exam.