Networking cable

Source: Wikipedia, the free encyclopedia.

Networking cable is a piece of

protocol, and size. The devices can be separated by a few meters (e.g. via Ethernet) or nearly unlimited distances (e.g. via the interconnections of the Internet
).

While

computer networks utilize cables to transfer signals from one point to another.[1]

There are several technologies used for network connections.

power lines
are used as network cabling.

Twisted pair

A picture of an unterminated cable, showing four twisted pairs of wires
A twisted pair cable with shielding

Twisted pair cabling is a form of wiring in which pairs of wires (the forward and return conductors of a single circuit) are twisted together for the purposes of canceling out electromagnetic interference (EMI) from other wire pairs and from external sources. This type of cable is used for home and corporate Ethernet networks. Twisted pair cabling is used in short patch cables and in the longer runs in structured cabling.

There are two types of twisted pair cables: shielded and unshielded.

Ethernet crossover cable

An

Auto MDI-X, so it does not matter whether crossover or straight cables are used.[2]

Fiber optic cable

Multi-mode fiber cables with LC (top) and ST (bottom) optical fiber connectors, both with protective caps in place.

An

single-mode fiber
.

Coaxial cable

A coaxial cable has a central conductor surrounded by a sheath of conductor with insulation in between.

Coaxial cables form a transmission line and confine the electromagnetic wave to an area inside the cable between the center conductor and the shield. The transmission of energy in the line occurs totally through the dielectric inside the cable between the conductors. Coaxial lines can therefore be bent and twisted (subject to limits) without negative effects, and they can be strapped to conductive supports without inducing unwanted currents in them.

Early Ethernet, 10BASE5 and 10BASE2, used baseband signaling over coaxial cables.

The most common use for coaxial cables is for television and other signals with bandwidth of multiple megahertz. Although in most homes coaxial cables have been installed for transmission of

TV signals, new technologies (such as the ITU-T G.hn standard) open the possibility of using home coaxial cable for high-speed home networking applications (Ethernet over coax
).

Patch cable

A

optical cable used to connect one electronic or optical device to another for signal routing. Devices of different types (e.g. a switch connected to a computer, or a switch connected to a router) are connected with patch cables. Patch cables are usually produced in many different colors so as to be easily distinguishable.[2] In contrast to structured cabling
, patch cables are more flexible.

Power lines

Although power wires are not designed for networking applications,

G.9960 as the first worldwide standard for high-speed powerline communications.[4] G.hn also specifies techniques for communications over the existing category 3 cable used by phones and coaxial cable used by cable television
in the home.

See also

  • ISO/IEC 11801, general-purpose telecommunication cabling
  • Telecommunication cable

References

  1. ^ "Network Cables". Networktutorials.info. Archived from the original on 2010-12-24. Retrieved 2012-10-16.{{cite web}}: CS1 maint: unfit URL (link)
  2. ^ a b "Ethernet Cable Identification". Donutey.com. Archived from the original on 2016-03-06.
  3. ^ "Data Cabling - Total Solution Computing". Retrieved 2017-04-30.[permanent dead link]
  4. ^ "New global standard for fully networked home" (Press release). International Telecommunication Union. 2008-12-12. Archived from the original on 2015-03-13. Retrieved 2018-02-16.

External links