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CompTIA A+ 220-1101
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CompTIA A+ 220-1101 Practice Question

An IT technician is troubleshooting a newly installed Ethernet cabling system and suspects that some cables might not be transmitting data correctly. Which testing tool would be BEST to determine if each cable is correctly wired and capable of carrying a signal from one end to the other?

Toner probe
Cable tester
Crimper
Cable stripper

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Answer Description

A cable tester is the appropriate tool to check if Ethernet cables are wired correctly and to verify the electrical connectivity from one end of the cable to the other. It can determine if there is continuity in the wires, if there are short circuits, if the wires are connected to the correct pins, and if the length of the cable is within specified limits. Other options, like a toner probe, crimper, and cable stripper, serve different purposes. A toner probe is used to trace and locate cables in a bundle or within walls, but does not test electrical continuity or correct wiring. A crimper is a tool to attach connectors to a raw cable, not to test the cables. A cable stripper is used to remove the outer insulation of a cable for termination tasks but does not provide testing of the cable’s functionality.

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CompTIA A+ 220-1101

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