Which Ethernet standard supports 1 Gbps over multimode fiber with a maximum distance of about 550 meters?

Which Ethernet standard supports 1 Gbps over multimode fiber with a maximum distance of about 550 meters?

• A. 100BASE-TX
• B. 1000BASE-T
• C. 1000BASE-SX
• D. 10GBASE-T

Answer: (C)

Matching speed, media, and reach is what this question is testing. For 1 Gbps over multimode fiber with a reach of about 550 meters, the SX variant of Gigabit Ethernet is the fit. 1000BASE-SX uses short-wavelength optics (typically 850 nm) and is designed for multimode fiber, with a typical maximum distance around 550 meters on common multimode grades (OM2/OM3). The other options run over copper twisted pair rather than fiber, or operate at higher speeds, so they don’t meet the combination of media type and distance described.

Matching speed, media, and reach is what this question is testing. For 1 Gbps over multimode fiber with a reach of about 550 meters, the SX variant of Gigabit Ethernet is the fit. 1000BASE-SX uses short-wavelength optics (typically 850 nm) and is designed for multimode fiber, with a typical maximum distance around 550 meters on common multimode grades (OM2/OM3). The other options run over copper twisted pair rather than fiber, or operate at higher speeds, so they don’t meet the combination of media type and distance described.