What is Ethernet?



Ethernet is a communication standard that was developed in early 80’s to network computers and other devices in a local environment such as a home or a building. This local environment is defined as a Local area network (LAN) and connects multiple devices so the taking create store and share information with others in a location.


Ethernet is a wired system is started with using coaxial cable and a successful progress to now using twisted pair copper wiring and fiber optic wiring.



Who invented twisted pair wiring?


Alexander Graham Bell invented twisted-pair wiring in 1881. In 1983 Ethernet was standard ISD into the standard IEEE 802.3 by the institute of electrical and electronic engineers.


This standard define the physical layer in the Mac or media access control portion of the data link layer or wired Ethernet.





These two layers are defined as the first two layers in OSI or open systems in a connection model.


The physical layer consists of the following components, cabling and devices.



Ethernet Cabling:

As stated previously, Ethernet cables comes is coaxial cable which is not very common except in order installations.

Twisted pair and fiber optic:

The most coming cable is twisted pair cables with the latest being category 6 with speed up to 1 Gb/s and CAT 6 a and CAT 7 with speeds up to 10 Gb/s. Category 5 and 5e cables are bathes use in existing applications but handle the lowest speed between 10 Mb/s to 100 Mb/s but are more susceptible the noise.


The Ethernet twisted pair utilizes RJ-45 8-pin connectors at either end of the cable that is ping for transmitting and receiving data in either half or full duplex mode. Half duplex transmits data in one direction at a time or full duplex allows data to be transmitted in both directions at the same time. Full duplex and Ethernet can be achieved by using two pairs of wires to allow data to travel both directions simultaneously.


Fiber optic cable uses glass or plastic Optical fiber is can’t do it light process to transmit data. It is allowed Ethernet to travel for the distances at higher speeds. Fiber optic cables used several different types of connectors they vary depending on your application needs. Some of the different types are SFP (Small Form Pluggable or Small Factor Pluggable) and SC (Subscriber Connector) also known as square connector or Standard Connector.


In order to use fiber optic and an Ethernet network, the utilizes twisted pair Ethernet cabling, you need to use in Ethernet to fiber converter they will allow the network to take a advantages the highest speed of fiber optic and going to the distance with Ethernet network can reach.


Updated: July 11, 2019 — 6:17 PM

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