A Cat 6 ethernet cable is used with various network topologies. It retains a bandwidth of 250 MHz which enables 1 Gigabit Ethernet to be used at greater distances than with Cat 5e, while also supporting 10 Gigabit Ethernet over shorter distances. There are four pairs of twisted-pair copper wires in a Cat 6 cable. The shielding on these cables is better than previous category cables, but does not grade as high as other category cables. Thus, these higher grade cables reduce crosstalk and electromagnetic interference. These provide an ideal mix of cost efficiency and performance, be it for personal use or small and medium companies.