Quick Answer
The answer is to define and enforce data retention schedules. This is the best control because it directly addresses the requirement by establishing precise timeframes for data deletion or archival, automating lifecycle management through mechanisms like object storage expiration policies or database TTL settings, thereby preventing indefinite data persistence. On the CISA exam, this question tests your understanding of data lifecycle governance and the distinction between preventive controls (schedules) and detective controls (audit logs); a common trap is confusing a retention schedule with a backup policy, which preserves data rather than purges it. Remember the mnemonic “R.A.I.D.”: Retention schedules Automate, Implement, and Delete—ensuring data doesn’t overstay its welcome.
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.
An organization wants to ensure that data is not retained longer than necessary. Which of the following is the BEST control to implement?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Encrypt all data at rest
Why wrong: Encryption does not enforce retention.
Implement a backup retention policy
Why wrong: Backup retention is part of data retention.
Use role-based access controls
Why wrong: Access controls do not enforce deletion.
Define and enforce data retention schedules
Retention schedules ensure data is deleted when no longer needed.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Define and enforce data retention schedules
Defining and enforcing data retention schedules directly addresses the requirement to not retain data longer than necessary by specifying precise timeframes for data deletion or archival. This control ensures compliance with legal, regulatory, and business needs by automating the lifecycle management of data, such as through expiration policies in object storage (e.g., S3 Lifecycle rules) or database TTL (time-to-live) settings. Without such schedules, data may persist indefinitely, increasing storage costs and regulatory risk.
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.
Encrypt all data at rest
Why it's wrong here
Encryption does not enforce retention.
Implement a backup retention policy
Why it's wrong here
Backup retention is part of data retention.
Use role-based access controls
Why it's wrong here
Access controls do not enforce deletion.
Define and enforce data retention schedules
Why this is correct
Retention schedules ensure data is deleted when no longer needed.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates confuse data retention (how long data is kept) with data protection mechanisms like encryption or access control, or they mistakenly think backup retention policies are sufficient for primary data lifecycle management.
Detailed technical explanation
Data retention schedules are often implemented via automated policies such as AWS S3 Lifecycle rules (e.g., transitioning to Glacier after 30 days and deleting after 365 days) or database TTL indexes (e.g., MongoDB's expireAfterSeconds). These mechanisms rely on timestamps or metadata to trigger deletion, ensuring compliance with regulations like GDPR's right to erasure. A common subtlety is that retention schedules must account for legal holds (e.g., litigation holds) that override deletion, requiring integration with eDiscovery tools to prevent premature data loss.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the CISA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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: Define and enforce data retention schedules — Defining and enforcing data retention schedules directly addresses the requirement to not retain data longer than necessary by specifying precise timeframes for data deletion or archival. This control ensures compliance with legal, regulatory, and business needs by automating the lifecycle management of data, such as through expiration policies in object storage (e.g., S3 Lifecycle rules) or database TTL (time-to-live) settings. Without such schedules, data may persist indefinitely, increasing storage costs and regulatory risk.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Read the scenario before looking for a memorised answer.
About these practice questions
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Same concept, more angles
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. An organization is implementing a data retention policy for personally identifiable information (PII) to comply with GDPR. Which of the following is the MOST appropriate approach?
hardWhy D: Option D is correct because GDPR mandates that PII must not be kept longer than necessary for the purpose for which it was collected. Defining retention periods based on legal and business requirements ensures compliance with the storage limitation principle (Article 5(1)(e)), and secure deletion (e.g., using cryptographic erasure or overwriting with tools like shred on Linux) prevents unauthorized recovery. This approach balances regulatory compliance with operational needs.
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Last reviewed: Jun 11, 2026
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