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Backup system
Video conference
Print/Hardware sharing
Email

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TCP/IP - data transfer in packets
FTP - file transfer protocol
SMTP - E-mail
POP3 - E-mail

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De Jure- This is the LAW meaning if you buy a DVD you know it will wonk in any DVD player as the standard is set by the law.
De Facto- This is not set by the law but it is usually the 'normal' thing to use e.g. it is not the law to have windows on computers but people use it anyway.

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VLE will be included
benefits:
Where you go on the internet to learn saving resources and making it available 24/7
Greater parental involvement
Pupils can keep up if they're
are off sick

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This is how data is physically sent across a network. The 3 main types are:
Network Cable-  Made of Copper and covered in plastic for protection, it is very cheap however the longer it is the more degraded. Network cables are also expensive to install but has a faster speed compared to WiFi.
Fibre Optic Cable- This is very expensive to buy and install although it is very fast, secure and does not degrade over long periods of time.
WiFi- WiFi is cheap to install BUT is slow in comparison to cable, the signal strength can be weak behind walls and can be lost.

Data Transmission- Data can be transmitted by:
Frame Relay -
DSL (Broadband)
Cable

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WWW (World wide web)- access to files
Extranet- everyone accesses outside
Intranet- network everyone accesses
Internet- e.g. routers, switches

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We will use a server rather than a client setup as a server is more powerful

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A gateway is the same as a bridge HOWEVER it is used to connect 2 different networks together e.g. star and peer-to-peer

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If 2 or more networks need to be connected we use a Bridge. This sends the data where it is needed

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Star network
Advantages- You have your own cable so data goes directly to the computer it also has a good speed due to direct cable
Disadvantages- Expensive as a lot of cables are needed. If the server breaks so does the network

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Server - £10000
Cable - fibreoptic 200 miles - £10
Windows - £800
Copper cable - £55
VLE - £8000
Internet E-mail - free
20 Switch - £100
40 switch - £160 x2
50MB internet - £900
Access point - £50 x2
Bridge - £2000
Wireless laser printer - £220 x2
Video conference - £2500
Webcam - £10 x30
Microphone - £5 x30
Extra-net - £2000
NIC - £10  x60
Laptop - £300 x5
Total - £29,505

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A network is when two or more computers are linked together.
Basic elements consist of:
Communication Devices
Network Software
Data Transfer Media