medium for trasmission data hardware
DESCRIPTION
NetworkingTRANSCRIPT
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MEDIUM FOR TRASMISSION DATA
ROZANA DIANA AHMAD RUSLI
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It consists oftwo wires or conductors twisted together, eachwith its own plastic insulation. Used RJ45 connector
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COAXIAL CABLE
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COAXIAL CABLE
• consists of a center wire surrounded by insulation and then a grounded shield of braided wire. The shield minimizes electrical and radio frequency interference.
• Coaxial cabling is used by the cable television industry and is also widely used for computer networks, such as Ethernet.
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FIBRE OPTIC
• The fibre optic cable is a networking medium that uses light for data
• Its core consists of dozens or hundreds of thin strands of glass or plastic which uses light to transmit signals.
• Each strand, called an optical fibre, is as thin as a human hair.
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FIBRE OPTIC
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RADIOWAVES / MICROWAVES
Frequencies3 KHz TO 1 GHz
Frequencies1 GHz to 300 GHz
RADIOWAVES MICROWAVES
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Frequencies300 GHz TO 400 THz
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Frequencies 2400-2480 MHz
Distance10 Meter
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Connections are so fast (10 times faster than modem)Internet Satellite : StarBand, Pegasus Express, Teledesic and Tachyon.Satellite used for broadcasting and internet communication
Its MALAYSIA have own satellite???
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MODEM
1. To transmit data over telephone or cable line2. Convert data signal :Computer (digital) telephone line (analog)telephone line (analog) Computer (digital)
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INTERNALFOR DESKTOP PC
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XX
Digital signal Digital signal
Analog signal
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Enables the computer to access the network.
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Transmit data to correct destination on the network
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Allow computers to transfer data.
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USB wirelessAdapter
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ACCESS POINT
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V
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HUB / SWITCH
Used to connect computer or devices on LAN (local area network)
HUBSWITCH
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Z Z
X
Internet
IDENTIFY THE X,Y Z DEVICES ?
Y
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W
Internet
ZZ
X
Y
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X
Y
Z
W
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X