CCSP Cloud Data Security Practice Question
A company is implementing a data loss prevention (DLP) strategy for cloud storage. They need to detect and mask credit card numbers in documents stored in a cloud storage bucket. The DLP service provides de-identification transforms including masking, tokenization, and pseudonymization. Which transform should the company use to irreversibly replace the credit card numbers with a placeholder while maintaining the original format for analytics?
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
✓
Masking
Masking replaces sensitive data with a masked version, such as showing only the last four digits, preserving format for analytics. Tokenization substitutes with a token that requires a mapping table. Pseudonymization replaces with a consistent pseudonym that can be reversed. Bucketing groups values into ranges.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Pseudonymisation
Why it's wrong here
Pseudonymisation is reversible with additional data.
- ✗
Bucketing
Why it's wrong here
Bucketing groups values into ranges, not suitable for credit card numbers.
- ✓
Masking
Why this is correct
Masking irreversibly obscures data while preserving format.
- ✗
Tokenization
Why it's wrong here
Tokenization is reversible if the token mapping is accessible.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.