Certified Information Systems Auditor (CISA) — Question 401

Which of the following is the PRIMARY purpose of performing a parallel run of a new system?

Answer options

• A. To verify the new system provides required business functionality
• B. To identify any errors in the program and file interfaces immediately
• C. To compare the key performance indicators (KPIs) of the new and old systems
• D. To verify the new system produces the expected results

Correct answer: D

Explanation

The correct answer, D, emphasizes the importance of validating that the new system outputs the expected results, which is crucial for a successful transition. While options A, B, and C address other valid concerns, they do not capture the primary goal of a parallel run, which is to ensure the new system's outputs are accurate and aligned with expectations.