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Computer Science Unit 5 Flashcards
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- 1WANWide Area Network - These are used to link LAN's that are separated by large distances ranging from tens of metres to thousands of kilometres
- 2LANLocal Area Network - These are characterised by high-speed transmission over a short area, signal has to be boosted if the LAN becomes too big
- 3PANPersonal Area Network - These are networks organised around a single person, They often involve mobile computers and smartohones
- 4VPNVirtual Private Networks - These are a cheaper alternative to WAN's and use dedicated packet-switched links to interconnect two or more LANs. They interconnect the LANs by using the existing internet structure
- 5MAC AddressA MAC Address is a unique number written into the network card of a device for communications on the physical network segment
- 6ProtocolA set of standardized procedures for transmitting or storing data
- 7PacketA packet is the unit of data that is routed between an origin and a destination on the Internet or any other packet-switched network
- 8HostnameThe name of a device connected to a netwrok
- 9ChecksumAn error-detection scheme that uses a numerical value based on the number of set bits in a message to determine if a message has been garbled
- 10Even ParityChecking that the number of 1's in the data word add up to an even number
- 11Odd ParityChecking that the number of 1's in the data word adds up to an odd number
- 12Bus NetworkIt is a network connected using one main backbone cable, on which each device is connected linearly.
- 13Ring NetworkEvery device has exactly two neighbours for communication purposes. All messages pass around in the same direction
- 14Star NetworkIt has a central connection point referred to as a "hub node". Devices normally connect to the hub by cabling that is often referred to as unshielded twisted pair (UTP) ethernet.
- 15Mesh NetworkEach computer and network device is interconnected with one another, allowing for most transmissions to be distributed, even if one of the connections goes down
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- GCSE (Unit 5 - Networks) Computer Science Fichas sobre Computer Science Unit 5 Flashcards, creado por Conor Mitchell el 09/09/2015.
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- Conor Mitchell
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