hardMultiple ChoiceObjective-mapped
CISSP Practice Question: Implements a data masking policy for production…
An organization implements a data masking policy for production databases. Which of the following best describes the primary goal?
⚠ Common exam trap
Test-takers frequently confuse data masking with encryption, as both protect data but serve fundamentally different purposes—encryption is reversible and protects data in transit/at rest, while masking is irreversible and protects data in non-production environments.
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
✓
Reduce the risk of data exposure during testing
Data masking irreversibly replaces sensitive data with realistic but fictitious values, ensuring that production data is not exposed in non-production environments like testing or development. This directly reduces the risk of data exposure during testing, which is the primary goal of a data masking policy. Unlike encryption, masking does not preserve the ability to reverse the transformation, making it ideal for scenarios where the original data is not needed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Reduce the risk of data exposure during testing
Why this is correct
Data masking transforms sensitive production data into realistic, yet non-sensitive, surrogate data. This process is crucial for environments like development, testing, and training, where access to actual production data is not required but data integrity and format are essential for application functionality validation. By replacing real sensitive information with masked equivalents, organizations significantly reduce the risk of unauthorized disclosure or compromise should the test environment be breached or data mishandled. This maintains compliance with privacy regulations while enabling robust testing.
- ✗
Ensure data availability
Why it's wrong here
Data masking's primary objective is data confidentiality, not availability. While masked data is available for use in non-production environments, the masking process itself does not inherently guarantee or enhance the availability of the original production data. In fact, poorly implemented masking solutions, especially those involving complex transformations or large datasets, could potentially introduce performance overheads or data integrity issues, indirectly impacting the availability of the masked data or the systems processing it.
- ✗
Encrypt data at rest
Why it's wrong here
Data masking is fundamentally different from encryption. Encryption renders data unreadable without a decryption key, allowing for reversible transformation back to its original state. In contrast, data masking permanently alters sensitive data values with fictitious but structurally similar data, making the original data largely irrecoverable from the masked version. While both aim to protect data, masking focuses on creating safe, non-production datasets, whereas encryption secures data in transit or at rest, preserving its original form for authorized access.
- ✗
Simplify access controls
Why it's wrong here
Data masking does not simplify access controls; rather, it complements them by reducing the sensitivity of data in certain environments. Access controls, such as role-based access control (RBAC) or attribute-based access control (ABAC), govern who can access what resources and under what conditions. Masking operates on the data itself, transforming it to reduce risk, but it does not alter the underlying mechanisms or complexity of managing user permissions and entitlements to systems or databases.
Go deeper
Related to this question
Learn chapter
Asset Security: Privacy and Data Retention
Key term
Risk
Risk is the possibility that an event or action will negatively affect an organization's ability to achieve its goals, often measured in terms of likelihood and impact.
Key term
Encryption
Encryption is the process of converting readable data into a secret code to prevent unauthorized access.
About these practice questions
Courseiva writes every CISSP question from scratch — 747 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or 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 CISSP 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 CISSP exam.