Certified Information Systems Auditor (CISA) — Question 1207

In an area susceptible to unexpected increases in electrical power, which of the following would MOST effectively protect the system?

Answer options

Correct answer: B

Explanation

A voltage regulator is specifically designed to maintain a steady output voltage despite fluctuations in input voltage, making it the most effective protection against unexpected power increases. While a generator and alternate power supply line can provide backup power, they do not regulate voltage. A circuit breaker can protect against overloads and short circuits but does not address voltage regulation directly.