The crossover cable connects two Ethernet network devices to each other. They were created to support temporary host-to-host networking in situations where an intermediate device like a network router is not present. Although crossover cables appear the same as a standard straight-through (patch) Ethernet cables until their internal wiring structures are compared.
Twisted pair cables are widely used in the transferring information, especially over long a distances. The twist in the cable cancels any magnetic interference that may develop in the wiring.There are two common types of twisted pair cabling, STP and UTP. The S represents Shielded, the U represents Unshielded, and the TP represents the twisted pair for both.
Fiber optic cable, is a high-speed data transmission medium, it contains tiny glass or plastic threads that carry light beams. Because fiber optic cables transmit data via light waves, they can transfer information at the speed of light. Not surprisingly, fiber optic cables provide the fastest data transfer rates of any data transmission medium.
A structured cabling system is a complete system of cabling and associated hardware, which provides a widespread telecommunications infrastructure for business communications. This system allows the continuous flow of information, from data and voice to security and wireless connections.
As expected, electronic equipment (including cat cables) emit electromagnetic signals. When there are many cables near each other, these cables can interfere with each other. This interference is known as “crosstalk”. Crosstalk increases errors and lost packets (among other problems).