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100BASE-X
100BASE-X uses a star bus topology similar to 10BASE-T’s. 100BASE-X provides a data transmission speed of 100 Mbps using baseband.
The 100BASE-X standard provides the following cabling specifications:
- 100BASE-TX. Two twisted-pairs of Category 5 UTP or STP
- 100BASE-FX. Fiber-optic cabling using 2-strand cable
- 100BASE-T4. Four twisted-pairs of Category 3, 4, or 5 UTP
100BASE-X is sometimes referred to as “Fast Ethernet.” Like 100VG-AnyLAN, 100BASE-X provides compatibility with existing 10BASE-T systems and thus enables plug-and-play upgrades from 10BASE-T.