The correct answer is A. Toner probe.
A toner probe is an electronic test instrument that can help trace wires and locate the port where a printer is connected on a patch panel. A toner probe consists of two parts: a tone generator and a tone detector. The tone generator sends a signal through the cable, and the tone detector picks up the signal at the other end. By using a toner probe, a technician can identify which port on the patch panel corresponds to the printer cable.
A loopback plug is a device that can test the functionality of a network port by sending and receiving signals from the same port. A loopback plug is not useful for locating ports on a patch panel.
A cable tester is a device that can verify the integrity and continuity of a cable by checking for open, short, or miswired connections. A cable tester can also measure the length and resistance of a cable. A cable tester is not useful for locating ports on a patch panel.
A Wi-Fi analyzer is a software or hardware tool that can monitor and analyze wireless networks by scanning for available channels, signal strength, security settings, and other parameters. A Wi-Fi analyzer is not useful for locating ports on a patch panel.
[Reference: comptia A+ Core 1 - Hardware And Network Troubleshooting - ExamGuides.com, , , , , ]
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