220-801 Question #462: Real Exam Question with Answer & Explanation

The correct answer is C: Multimeter. A multimeter measures electrical properties such as voltage, current, and resistance. To verify whether a PSU is faulty, a technician uses a multimeter to measure the DC voltage output on the PSU's connectors (e.g., +12V, +5V, +3.3V rails) and compare them against ATX specificati

Question

The computer keeps rebooting, losing power, and shutting down intermittently. After verifying that there are no issues with overheating the technician suggests that PSU possibly needs to be replaced. Which of the following tools will technician use to determine if the PSU is the cause?

Options

ACable tester
BToner probe
CMultimeter
DLoopback plug

Explanation

A multimeter measures electrical properties such as voltage, current, and resistance. To verify whether a PSU is faulty, a technician uses a multimeter to measure the DC voltage output on the PSU's connectors (e.g., +12V, +5V, +3.3V rails) and compare them against ATX specifications. Incorrect or unstable voltages confirm a failing PSU. A cable tester (A) tests network or data cables for continuity. A toner probe (B) traces cables behind walls. A loopback plug (D) tests network port functionality-none of these are appropriate for diagnosing PSU voltage output.

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