Final answer:
The best-suited tool for locating where a network cable terminates in a wiring closet is a cable toner, which facilitates the identification of a cable's endpoint by detecting tones through cable insulation.
Step-by-step explanation:
When a technician needs to identify where a network cable terminates in a wiring closet, they often turn to a specific tool designed for this task. The ideal device is a cable toner or cable tracer. This tool allows technicians to apply a tone signal on one end of the cable, and then with a receiver known as a probe, they can scan the wiring closet's patch panels and outlets to locate the signal and thus the cable's end.
A cable toner is the best-suited tool because it is specifically made to deal with network cabling issues by detecting the tones through the insulation of cables, making it possible to locate a cable in a bundle without having to strip the wires. This makes it a more effective solution compared to a simple tape measure which can measure distance but has no ability to track the path of a specific cable among many.