n 1000BaseSX The Gigabit Ethernet architecture that runs at 1000 Mbps
over multimode fiber (MMF) optic cabling. This architecture is designed for
short distances of up to 550 meters.
n 1000BaseLX The Gigabit Ethernet architecture that runs at 1000 Mbps
over single-mode fiber (SMF) optic cabling. This architecture supports
distances up to 3 kilometers.
n 1000BaseCX The Gigabit Ethernet architecture that runs at 1000 Mbps
over coaxial cable and supports distances of up to 25 meters.