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Zorluk: OrtaUtilizing Hardware Testers and Packet Analyzers

A network administrator is troubleshooting an unexpected link outage on a 2 km single-mode fiber optic backbone connecting two enterprise distribution switches. While both optical transceivers are functioning properly, no signal reaches the remote end. The administrator needs to pinpoint the exact location of a suspected physical break along the cable run within an underground conduit. Which diagnostic tool should the administrator use?

  1. Optical Time-Domain Reflectometer (OTDR)Cevap
  2. B
    Optical Power Meter
  3. C
    Copper Time-Domain Reflectometer (TDR)
  4. D
    Tone generator and probe

Cevap

An Optical Time-Domain Reflectometer (OTDR) is the correct tool because it measures light reflections along a fiber optic strand to calculate the exact distance to a physical break or defect.
An Optical Time-Domain Reflectometer (OTDR) is designed specifically to trace fiber optic cable runs. By transmitting pulses of light into the fiber and analyzing the backscattered light, it calculates time-of-flight reflections to display a trace showing the exact distance to splices, excessive bends, or complete breaks along the cable.

Adım Adım Çözüm

1
Identify the physical cabling medium
The infrastructure uses single-mode fiber optic cable.
Diagnostic tools are media-specific (optical vs. electrical).
2
Determine the diagnostic requirement
The goal is to calculate the distance to a cable fault inside a conduit run.
A tool that only measures overall pass/fail loss is insufficient when fault location is required.
3
Select the appropriate optical diagnostic tool
The Optical Time-Domain Reflectometer (OTDR) sends light pulses down the fiber and evaluates backscatter reflectivity to map distance to attenuation events and breaks.
An OTDR is specifically designed for characterization and distance-to-fault analysis in optical fiber runs.

Anahtar Kavram

Optical Time-Domain Reflectometer (OTDR) fault localization
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Utilizing Hardware Testers and Packet Analyzers

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