Computer Help and Support

Tuesday, August 30, 2011

Computer Support for Network

by Daina Thomas 1 comments

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There are few things as valuable in life as a solid support network. In good times or bad, a support network gives you a feeling of stability and a safety net. A support network takes time, dedication and a correct approach to properly build. Follow these steps to build a solid support network.

Mediums used by computer networks:
For communication between two devices, a medium is must. There are several mediums, such as electrical cable, optical fiber and radio waves which are used for networking. Electrical and optical fiber are used in wired technology while radio waves are employed in wireless technology.

Wired Networks:
In the wired technology, twisted pair cable is the most commonly used medium for communication. Twisted pair wire is made of metal wire that are twisted into pairs. Computer networking wire contains 4 pairs of metal wires, which are used for data as well as voice transmission. The purpose of using twisted wires is to minimize noise which is caused by electromagnetic induction and crosstalk. There are two pairs of twisted wires, namely Unshielded Twisted Pair and Shielded Twisted Pair. The speed range of twisted pair cable is 2 million bits per second to 10 billion bits per second.

Another widely used medium in wired technology is coaxial cable. It is mostly used for local area networks, cable television systems, etc. It is made of metal wire, covered with insulating layer of a flexible material with a high dielectric constant, all of which are wrapped by a conductive layer. The purpose of using insulating layer is to minimize noise and signal distortion.

Optical fiber is the another communication medium, invented in the second half of twentieth century. Its components are filaments of glass fiber covered in protective layers that transmits data by means of pulses of light. It carries light signals over long distances. Electromagnetic interferences cannot affect the signals carried by it. Its maximum transmission speed could touch trillions of bits per second.

For all types of cable malfunctioning, network support is provided by many service providers.

Wireless Networks:
There are several widely used wireless technologies, such as Wireless LAN Technology, Communication Satellite Technology, Infrared Communication Technology, Terrestrial Microwave Technology, etc.

Wireless LAN Technology employs hi frequency technology, which is akin to digital cellular and low frequency radio technology. This spread spectrum technology connects multiple devices in a limited area. Wireless LAN in an office or home could be easily set up with the help of numerous PC support providers.

Communication satellites utilizes microwave radio signals as communication medium because microwave radio signals are least affected by earth's atmosphere. Data, voice and TV signals are transmitted and received using microwave radio technology.

Infrared Communication Technology is used to transmit signals between devices within short distance. The maximum distance covered by this technology is typically 10 meters.

Terrestrial Microwave Technology employs low gigahertz signal range, that restricts transmissions to line of sight. The maximum distance between microwave signal relay stations is 48km.

Wireless computer network is the backbone of business and technological processes, which could be immensely damaged if the networking system breaks down. In that eventuality, online PC support should be used to set the networking system right.

Comments 1 comments
pcsquad247 said...

I appreciate, cause I found just what I was looking for. You’ve ended my four day long hunt! God Bless you man. Have a great day. Bye
PC Support

K.P.Pandey
Hello Everyone, I am K.P.Pandey.I am a technical and security specialist, associated with numerous tech firms including iYogi. iYogi is synergistic ally aligned to offer tech support, Microsoft support, computer repair, PC help services, computer support, online technical support, data back-up services to its clients in Australia, US, UK and Canada by Microsoft certified technician.
kppandey12@gmail.com

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