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Unit 4 (What is a network? (Two or more computers connected together to…
Unit 4
What is a network?
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For example, share files, messages, a whole row of computers to share one single printer
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Network connections are made using cables (wires) or radio signals (wifi) or telephone lines (modems) or satellite for long distances.
LAN Toplogies
Bus Network
- Connects all computers together via a short cable linking it to the bus
- Cheap to install
- Can be slow as all computers are using the same cable
- Will stop working if there's a break
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Ring Network
- Connected to a loop of cable
- Can cope with a break in the ring cable as all computers are all joined together
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Star Network
- A hub or a switch used at the centre of a star network
- Quite expensive to install
- Very fast as each computer has its own cable
- Can cope with a broken cable
- Will stop working if central device breaks
- Very common
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Hybrid Network
- Combines two or more of the basic topologies
- eg. has several star networks linked together
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