CCSP Cloud Data Security Practice Question
A financial services company uses a cloud DLP API to scan data stored in Cloud Storage and BigQuery. They need to reduce the risk of exposing credit card numbers in reports by replacing the first 12 digits with asterisks while preserving the last four. Which de-identification technique should they apply?
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 allows selective obfuscation of parts of a data value, such as showing only the last four digits of a credit card number.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Pseudonymization
Why it's wrong here
Pseudonymization replaces identifiers with pseudonyms, not partial masking.
- ✗
Bucketing
Why it's wrong here
Bucketing groups values into ranges, not suitable for card numbers.
- ✗
Tokenization
Why it's wrong here
Tokenization replaces sensitive data with a random token, which cannot be partially preserved.
- ✓
Masking
Why this is correct
Correct: Masking obscures part of the data, e.g., showing only last 4 digits.
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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.