What are the transmission media for network wiring in a local area network

In the process of building a local area network, we have four transmission media that can be used to transmit network signals, radio waves, twisted pairs, optical fibers, and coaxial cables. And each transmission medium meets certain network requirements and solves certain network problems. Here, we can explain to you in detail.

First of all, radio waves use electromagnetic waves or light waves to transmit information, and use it to connect networks without laying cables. There are two unique networks here, one is a mobile network and the other is a wireless LAN network. Using the mobile network, the machine can be connected through a cellular communication system to transmit network signals; using the wireless LAN network, the machine can be connected through a transmitter and receiver to transmit signals to ensure the transmission of information.

Twisted pair is the most widely used transmission medium in network wiring. It consists of two twisted wires to form a transmission circuit, which effectively transmits network signals and guarantees the flow of information. And its two wires are twisted together to effectively reduce the interference of the external magnetic field. Twisted-pair cable is divided into shielded and unshielded. Shielded twisted-pair cable will more effectively prevent information leakage and ensure network security. The transmission rate of the twisted pair is fast, the performance is reliable, the cost is low, and the application range is very wide.

Optical fiber is also a network transmission medium, and it can be applied to some fields that have particularly high requirements on the network. It can achieve high requirements, high-speed long-distance transmission of data, and ensure its safety performance. The cylindrical shape of the optical fiber is composed of three parts: core, cladding and sheath. The core is the innermost part and consists of one or more very thin strands or fibers made of glass or plastic. Each fiber is covered by its own cladding. The cladding is a glass or plastic coating with different optical properties than the core. The outermost layer is the sheath, which wraps one or a bunch of fibers that have been coated. The jacket is made of plastic or other materials, and it is used to prevent moisture, abrasions, pressure injuries, or other hazards from the outside world.

Finally, the coaxial cable is the most commonly used transmission medium in the local area network. It uses a copper core. The copper core is covered with an insulating layer, and the insulating layer is followed by a shielding layer. The shielding layer hydrogen wire is well wrapped , And then the outer foreskin, such a structure, effectively resists the interference of the outside world.