Which Ethernet standard provides Gigabit Ethernet over multimode fiber with 1 Gbps and up to 550 meters?

Which Ethernet standard provides Gigabit Ethernet over multimode fiber with 1 Gbps and up to 550 meters?

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

Answer: (B)

Gigabit Ethernet over multimode fiber relies on a short-wavelength optical signal (850 nm) to carry 1 Gbps over relatively shorter fiber runs. The standard that specifies 1 Gbps over multimode fiber with distances up to about 550 meters is the one using this 850 nm MMF approach. That combination is what enables 1 Gbps over multimode fiber up to 550 meters. In contrast, copper-based standards like 1000BASE-T, 100BASE-TX, and 10BASE-T run over twisted-pair copper and are limited to much shorter distances (typically 100 meters for the copper options) and lower speeds for the older ones.

Gigabit Ethernet over multimode fiber relies on a short-wavelength optical signal (850 nm) to carry 1 Gbps over relatively shorter fiber runs. The standard that specifies 1 Gbps over multimode fiber with distances up to about 550 meters is the one using this 850 nm MMF approach. That combination is what enables 1 Gbps over multimode fiber up to 550 meters.

In contrast, copper-based standards like 1000BASE-T, 100BASE-TX, and 10BASE-T run over twisted-pair copper and are limited to much shorter distances (typically 100 meters for the copper options) and lower speeds for the older ones.