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Difficulty: MediumUtilizing Hardware Testers and Packet Analyzers

A network technician needs to determine which port on a busy 48-port patch panel connects to an unlabeled wall outlet in a newly renovated conference room. Which hardware troubleshooting tool should the technician connect to the outlet to trace the physical cable run back to the correct patch panel port?

  1. Tone generator and probe kitAnswer
  2. B
    Time-domain reflectometer (TDR)
  3. C
    Loopback plug
  4. D
    Multimeter

Answer

The tone generator and probe kit is the correct tool for placing a signal on a wire pair to audibly trace and identify the corresponding patch panel termination.
The correct tool is a tone generator and probe kit (often called a fox and hound). The tone generator injects a signal onto the copper cabling at the wall outlet, and the inductive probe picks up the generated electromagnetic tone at the patch panel end, allowing rapid identification of the unlabeled port.

Step-by-Step Solution

1
Identify the goal of physical cable tracing across patch panels.
Recognize that locating an unknown wire run requires placing a recognizable signal on one end and detecting it at the remote destination.
Structured cabling runs through walls and conduits, preventing visual inspection.
2
Evaluate hardware diagnostic tools based on their primary function.
A tone generator connects to the outlet RJ45 port and transmits a tone signal along the copper pair, allowing the non-contact inductive probe to detect the tone when brought near the correct patch panel port wire termination.
Inductive probing enables fast identification without having to individually plug into or strip wires across 48 panel ports.

Key Concept

Cable Tracing and Identification Tools
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Topics

Utilizing Hardware Testers and Packet Analyzers

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