A hardware tool that verifies cable continuity and correct pinout. Identifies opens, shorts, and miswired pairs in copper cables.

A hardware tool that verifies cable continuity and correct pinout. Identifies opens, shorts, and miswired pairs in copper cables.

• A. Light Meter
• B. OTDR
• C. pathping
• D. Cable Tester

Answer: (D)

The key idea is verifying the physical wiring of copper cables. This tool checks that each conductor runs from one end to the other without gaps (continuity), confirms that there aren’t unintended connections between conductors (no shorts), and ensures the wiring order matches the expected pinout. That last point is crucial for twisted-pair Ethernet Cables, where the pairing and position of wires determine proper signaling. A basic tester will show whether a pin maps correctly end-to-end, while more advanced models can also detect opens, shorts, and miswire (pairs swapped or swapped pins). This makes it the go-to instrument for ensuring cables will carry signals reliably and interface correctly with network hardware. Light meters measure light levels and are used for fiber optic links, not copper continuity. An OTDR sends pulses down a fiber to locate faults along a fiber strand, which is specific to optical cabling. Pathping is a network diagnostic command that analyzes route paths and latency, not the physical wiring.

The key idea is verifying the physical wiring of copper cables. This tool checks that each conductor runs from one end to the other without gaps (continuity), confirms that there aren’t unintended connections between conductors (no shorts), and ensures the wiring order matches the expected pinout. That last point is crucial for twisted-pair Ethernet Cables, where the pairing and position of wires determine proper signaling. A basic tester will show whether a pin maps correctly end-to-end, while more advanced models can also detect opens, shorts, and miswire (pairs swapped or swapped pins). This makes it the go-to instrument for ensuring cables will carry signals reliably and interface correctly with network hardware.

Light meters measure light levels and are used for fiber optic links, not copper continuity. An OTDR sends pulses down a fiber to locate faults along a fiber strand, which is specific to optical cabling. Pathping is a network diagnostic command that analyzes route paths and latency, not the physical wiring.