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N10-005 · Question #367

Which of the following 802.3 classifications has a MAXIMUM segment distance of 984 feet (300 meters)?

The correct answer is C. 1000BaseSX. 1000BaseSX uses short-wavelength (850 nm) laser over multimode fiber and has a maximum segment distance of approximately 220–550 meters depending on fiber grade; for exam purposes it is commonly cited at up to 300 meters (984 feet). The other options have different distances…

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Question

Which of the following 802.3 classifications has a MAXIMUM segment distance of 984 feet (300 meters)?

Options

  • A1000Base
  • B100BaseFX
  • C1000BaseSX
  • D1000BaseT

How the community answered

(32 responses)
  • B
    6% (2)
  • C
    91% (29)
  • D
    3% (1)

Explanation

1000BaseSX uses short-wavelength (850 nm) laser over multimode fiber and has a maximum segment distance of approximately 220–550 meters depending on fiber grade; for exam purposes it is commonly cited at up to 300 meters (984 feet). The other options have different distances: 1000BaseT (copper Cat5e/6) is limited to 100 meters; 100BaseFX (multimode fiber) supports up to 2 kilometers; and generic '1000Base' is not a specific standard. 1000BaseSX is the only choice that matches the 300-meter figure.

Topics

#802.3 standards#1000BaseSX#fiber optics#segment distance

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