Selasa, 26 Agustus 2014

cable networking

In computer networking technology, cable networking is the most important component in a network because he serves as a media liaison. In OSI Layer wires running / working on Layer 1 (Physical Layer). Copper cable consists of 4 types: UTP, STP, and coaxial ScTP
UTP: Unshielded Twisted Pair
UTP may be cited as the lowest category in the type of twisted pair cable. prior to the development of 10Base-T technology, UTP cable is unable to accommodate the data up to 10Mbps. UTP cable is now able to accommodate up to 100 Mbps of data. In July 1999, the IEEE approved standard for 1000Base-T UTP cable, UTP cable, which means the data can accommodate up to 1000 Mbps or Gigabit sized data.
UTP cable can be divided into several categories, namely:
Cat 1: working frequencies <1mhz communication="" eg="" for="" nbsp="" p="" telephone="">Cat 2: working frequency> 4 MHz, used on twisted pair ARCNET system and Apple LocalTalk
Cat 3: working frequency> 16 MHz, digunanakan at 4 Mbps UTP Token Ring, Ethernet 10Base-T, 100 Base-T4 and digital telephone system
Cat 4: working frequency> 20 MHz, used in 16 Mbps Token Ring LAN
Cat 5: working frequency of 100 MHz is used at 100 Mbps network
Cat 5e (enhanced): 5 categoti prepared to serve the data size gigabit
Cat 6: working frequency of 200 MHz, is used to serve data size gigabit
STP : Shielded Twisted Pair
STP was originally developed by IBM as horizontal cabling media. Compared UTP, STP is more resistant to interfence electromagnetic interference (EMI)
ScTP : Screened Twisted Pair
ScTP is the incorporation of UTP and STP technology. ScTP contains 4 pairs of wires 100 ohms. The cables and wires are protected layer of foil amplifier. ScTP also called foil twisted pair (FTP) for the use of this foil layer.
coaxial
Coaxial cable consists of several types, but has a uniformity of design. In the middle there is a single copper wire protected layer of PVC (polyvinyl chloride). These layers are wrapped stranded cable made ​​of copper or aluminum. As the jacket cover rubber coated coaxial cable. Type coaxial cables in general are: RG-59: 75 ohms, for cable TV RG-58: 50 ohms, for thin ehernet RG-11: 50 ohms, for thick Ethernet
fiber Optics
Fiber optic cable is the latest generation of communications technology. This cable uses laser light as an information carrier wave. Optic cable has a service capacity which is much higher than copper wires. Optic cable can serve data up to 200Gbps!

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