Is the following description correct? Ethernet technology is a widely used technology, divided according to different transmission rates, there are 10M,100M,1000M. Three categories, of which 10M…

Is the following description correct? Ethernet technology is a widely used technology, divided according to different transmission rates, there are 10M,100M,1000M. Three categories, of which 10M versus 100M. The common transmission medium of Ethernet is twisted pair, but 1000M Due to the high speed of Ethernet, optical fiber must be used as the transmission medium.