What is the maximum backbone distance for 50 or 62.5 multimode optical fiber?

What is the maximum backbone distance for 50 or 62.5 multimode optical fiber?

• A. 800 meters
• B. 60000 meters
• C. 10000 meters
• D. 2000 meters

Answer: (D)

The distance that backbone fiber can run is limited by how much signal is lost and how much the signal spreads as it travels. For 50/125 or 62.5/125 multimode fiber, especially when used with the common LED-based transceivers at 850 nm, modal dispersion and attenuation cap how far you can send data reliably. Across typical installations and equipment of this type, a practical maximum backbone length is about 2 kilometers. That’s why the correct choice is 2000 meters. The other distances either fall short of what the fiber can support (shorter runs would still be within the limit) or imply scenarios (very long spans like tens of kilometers) that would require different fiber types, wavelengths, or repeaters beyond what this multimode fiber configuration supports.

The distance that backbone fiber can run is limited by how much signal is lost and how much the signal spreads as it travels. For 50/125 or 62.5/125 multimode fiber, especially when used with the common LED-based transceivers at 850 nm, modal dispersion and attenuation cap how far you can send data reliably. Across typical installations and equipment of this type, a practical maximum backbone length is about 2 kilometers. That’s why the correct choice is 2000 meters.

The other distances either fall short of what the fiber can support (shorter runs would still be within the limit) or imply scenarios (very long spans like tens of kilometers) that would require different fiber types, wavelengths, or repeaters beyond what this multimode fiber configuration supports.