Certified Information Systems Auditor (CISA) — Question 256

Which of the following MOST effectively minimizes downtime during system conversions?

Answer options

• A. Phased approach
• B. Parallel run
• C. Direct cutover
• D. Pilot study

Correct answer: B

Explanation

The Parallel run method allows both the old and new systems to operate simultaneously, which significantly reduces downtime as users can transition smoothly without interruption. In contrast, a Direct cutover can lead to substantial downtime if issues arise, and while a Phased approach and Pilot study can help with implementation, they do not minimize downtime as effectively as a Parallel run.