CompTIA
220-802 · Question #987
220-802 Question #987: Real Exam Question with Answer & Explanation
The correct answer is A: Power supply tester. A computer that shuts down and requires time to restart suggests a thermal protection shutdown or power delivery failure; a power supply tester is the first appropriate tool to assess PSU output under load.
Question
A computer regularly shuts down and often will not turn on again for an hour or so. Which of the following tools should a technician use FIRST to troubleshoot this?
Options
- APower supply tester
- BLoopback plug
- CPOST card
- DOhm meter
Explanation
A computer that shuts down and requires time to restart suggests a thermal protection shutdown or power delivery failure; a power supply tester is the first appropriate tool to assess PSU output under load.
Common mistakes.
- B. A loopback plug tests the functionality of serial, parallel, or network ports and has no relevance to a system shutdown issue.
- C. A POST card reports BIOS error codes during the Power-On Self-Test and is useful for diagnosing non-booting systems, not intermittent thermal or power shutdowns.
- D. An ohmmeter measures electrical resistance in circuits and is not a standard first-step tool for diagnosing intermittent PC shutdowns.
Concept tested. Using a PSU tester to diagnose intermittent power failure
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