Quick Answer
The correct answer includes tokenization, encryption, and data masking as the three commonly used techniques to protect sensitive data in a cloud environment. Tokenization replaces sensitive values like credit card numbers with non-exploitable placeholders, reducing compliance scope under frameworks such as PCI DSS even if the cloud storage is breached. Encryption renders data unreadable without the proper key, while data masking obscures original values for non-production use, ensuring that test environments do not expose real sensitive information. On the CISA exam, this question tests your understanding of how each technique applies specifically to cloud risk management, often trapping candidates who confuse tokenization with hashing or who overlook that masking is intended for development and testing, not production. A useful memory tip is to think of the acronym TEM: Tokenization for compliance, Encryption for confidentiality, and Masking for non-production safety.
This CISA practice question tests your understanding of protection of information assets. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE are commonly used techniques to protect sensitive data in a cloud environment? (Select exactly 3.)
Code obfuscation for application logic.
Why wrong: Protects code, not data.
Network segmentation between tiers.
Why wrong: Network control, not data protection.
Tokenization of sensitive fields.
Replaces sensitive data with tokens.
Encryption at rest and in transit.
Standard data protection.
Data masking for non-production environments.
Hides sensitive data in test systems.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Tokenization of sensitive fields.
Tokenization replaces sensitive data (e.g., credit card numbers) with a non-sensitive placeholder (token) that has no exploitable value. This technique is commonly used in cloud environments to reduce the scope of compliance (e.g., PCI DSS) because the token can be stored and processed without exposing the original sensitive value, even if the cloud storage is compromised.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Code obfuscation for application logic.
Why it's wrong here
Protects code, not data.
Network segmentation between tiers.
Why it's wrong here
Network control, not data protection.
Tokenization of sensitive fields.
Why this is correct
Replaces sensitive data with tokens.
Related concept
Read the scenario before looking for a memorised answer.
Encryption at rest and in transit.
Why this is correct
Standard data protection.
Related concept
Read the scenario before looking for a memorised answer.
Data masking for non-production environments.
Why this is correct
Hides sensitive data in test systems.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
ISACA often tests the distinction between data protection techniques (like encryption, tokenization, and masking) and general security controls (like network segmentation or code obfuscation), leading candidates to mistakenly select network segmentation as a data protection method.
Detailed technical explanation
Tokenization typically uses a secure vault or hardware security module (HSM) to generate and map tokens to original values, often employing a cryptographic algorithm like AES-256 for the mapping table itself. In a cloud environment, tokenization can be implemented as a service (e.g., via a tokenization gateway) that intercepts sensitive data at the application layer, ensuring that the cloud database never stores the actual sensitive value—a key differentiator from encryption, where the ciphertext remains in the same system and can be decrypted if keys are compromised.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
What to study next
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FAQ
Protection of Information Assets — This question tests Protection of Information Assets — Read the scenario before looking for a memorised answer..
The correct answer is: Tokenization of sensitive fields. — Tokenization replaces sensitive data (e.g., credit card numbers) with a non-sensitive placeholder (token) that has no exploitable value. This technique is commonly used in cloud environments to reduce the scope of compliance (e.g., PCI DSS) because the token can be stored and processed without exposing the original sensitive value, even if the cloud storage is compromised.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This CISA practice question is part of Courseiva's free ISACA 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 CISA exam.
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