Certified Information Systems Auditor (CISA) — Question 553

Which of the following features of a library control software package would protect against unauthorized updating of source code?

Answer options

• A. Access controls for source libraries
• B. Date and time stamping of source and object code
• C. Required approvals at each life cycle step
• D. Release-to- release comparison of source code

Correct answer: A

Explanation

Access controls for source libraries are essential in preventing unauthorized users from making changes to the source code, thus ensuring its integrity. The other options, while useful for tracking and managing code changes, do not inherently prevent unauthorized updates. Date and time stamping helps in tracking versions, required approvals ensure oversight, and release comparisons help in identifying differences but do not restrict access.