Complex sentence: While the early coaxial cable based variants of ethernet were half duplex by design, all the common variants twisted pair (10BASE-T, 100BASE-TX and 1000BASE-T) and fiber optic ethernet provide separate channels for send and receive.
Split into simpler sentences: While the early coaxial cable based variants of ethernet were half duplex by design. All the common variants twisted pair (10BASE-T, 100BASE-TX and 1000BASE-T) and fiber optic ethernet provide separate channels for send and receive.