Multimeter - Measures voltage, amperage, and resistance. Zero ohms indicates proper grounding, Voltmeter - Voltage only, Loopback Plug: - test a port.  Should result in a solid connection LED, Tone Generator and Probe: - sends repeating signal.  Used for cable identification, Fiber Optic Cable - Contains glass fiber strands. Designed for long-distance, high-performance networking, Shielded and plenum copper cables limited to - around 100 meters, Coaxial cables cover - 200 to 500 meters at most,

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