What can be very helpful to an IS auditor when determining the efficacy of a systems maintenance program?

What can be very helpful to an IS auditor when determining the efficacy of a systems
maintenance program? Choose the BEST answer.

A.
Network-monitoring software

B.
A system downtime log

C.
Administration activity reports

D.
Help-desk utilization trend reports

Explanation:
A system downtime log can be very helpful to an IS auditor when determining the

efficacy of a systems maintenance program.