Which type of medium is best for a data network Explain whyS

Which type of medium is best for a data network? Explain why.

Solution

Communication across a network is carried on a medium. The medium provides the channel over which the message travels from source to destination.

Modern networks primarily use three types of media to interconnect devices and to provide the pathway over which data can be transmitted. These media are:
1. Metallic wires within cables
2. Glass or plastic fibers (fiber optic cable)
3. Wireless transmission
4.Twisted pair

Out of all these twisted pair is best one for data network because of the following reason:

Twisted-pair cable is a type of cabling that is used for telephone communications and most modern Ethernet networks. The pairs are twisted to provide protection against crosstalk, the noise generated by adjacent pairs. When electrical current flows through a wire, it creates a small, circular magnetic field around the wire. When two wires in an electrical circuit are placed close together, their magnetic fields are the exact opposite of each other. Thus, the two magnetic fields cancel each other out. They also cancel out any outside magnetic fields. Twisting the wires can enhance this cancellation effect. Using cancellation together with twisting the wires, cable designers can effectively provide self-shielding for wire pairs within the network media.