PCSE Ensuring Data Protection Practice Question
A company is using Cloud DLP to inspect a BigQuery table containing customer PII. They want to redact all credit card numbers found in a column by replacing them with a token that preserves the format (e.g., last 4 digits visible). Which de-identification transform should they use?
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
✓
CryptoReplaceFfxFpeConfig
CryptoReplaceFfxFpeConfig performs format-preserving encryption (FPE), which can replace a value with a token that retains the format, such as last 4 digits visible.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
MaskingConfig with a masking character
Why it's wrong here
MaskingConfig can replace characters but does not preserve the original format partially.
- ✗
DateShiftConfig
Why it's wrong here
Used for dates only.
- ✗
BucketingConfig
Why it's wrong here
Bucketing replaces with a range, not format-preserving.
- ✓
CryptoReplaceFfxFpeConfig
Why this is correct
FPE preserves the format and can keep last 4 digits visible.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCSE practice question is part of Courseiva's free Google Cloud 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 PCSE exam.