CompTIA
220-802 · Question #360
220-802 Question #360: Real Exam Question with Answer & Explanation
The correct answer is D: Loopback plugs. Loopback plugs are hardware diagnostic tools used to test the functionality of external ports and connectors by redirecting output signals back as input.
Question
A senior technician requests a diagnostic tool for checking external ports and connectors on computers and laptops. Which of the following tools would BEST accomplish this task?
Options
- AWireless locator
- BCorona wire
- CToner probe
- DLoopback plugs
Explanation
Loopback plugs are hardware diagnostic tools used to test the functionality of external ports and connectors by redirecting output signals back as input.
Common mistakes.
- A. A wireless locator is used to detect wireless networks or devices, not to test physical ports.
- B. A corona wire is an internal laser printer component that charges the drum; it has no role in port diagnostics.
- C. A toner probe is used to trace cable runs and locate wiring, not to test external port functionality.
Concept tested. Using loopback plugs to test hardware ports
Reference. https://www.comptia.org/certifications/a
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