Which cable standard delivers 1 Gb/s using four pairs of CAT5e?

A. 1000Base-T
B. 1000Base-SX
C. 1000Base-LX
D. 1000Base-X

A. 1000Base-T is short for 1000 Baseband Twisted pair. 1000Base-T utilizes all four pairs over standard Cat5e, whereas 100Base-T utilizes only two pairs of Cat5.