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Networks - Coggle Diagram
Networks
WAN (Wide Area Networks
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A WAN uses cables, telephone lines, satellites,
radio waves to connect locations
Any network in which the computers communicate using resources supplied by a third party such as BT, is a Wide Area Network
Uses cables, telephone lines, satellites or
radio waves to connect two or more remote locations
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Organizations with multiple areas will have separate networks, so when these are joined together, they make a WAN.
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The Internet
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In 1969, there were four Internet connected networks
By 1989, there were 100,000 connected networks
By 2019, 4.5 billion people were Internet users
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Packets
When you request a web page, each router along the way uses the MAC address of the next router to send the data packet on the next leg of its journey
When sending a file over the Intenet, it will be broken up into individual packets.
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Routers and Switches
Router
Looks at the destination of packets of data and sends them to the network that is closer towards their destination
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Switch
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When a packet of data arrives, they can send it to the
correct computer
Hubs, by comparison will send the data to all
connected computers
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