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Josh Watkins
Mind Map by , created more than 1 year ago

A mind map for the internet part of the network topic for A451

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Josh Watkins
Created by Josh Watkins about 8 years ago
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The Internet Mind MapModemsComputer use digital signal but manyconnect to the internet via a phone lineA phone line uses analogue singalA modem converts a digital signal to ananalogue signalThis is done so it can be sentalong a phone lineIt then converts the analogue signalback to digital when it arrives at it'sdestination nodeBandwidth andBroadbandBandwidth is the capacity of a network interms of how quick it transmits dataBroadband is the name given tonetwork data transfer mediumsAs more users send data, thebandwidth is shared causing slowerspeeds for each user in transmissionMany frequencies can betransmitted at the sametime along a broadbandThis means that it can carry moredata at one time and therefor has afaster bandwidthADSL andCableADSL is wherespare capacity onPOTS* is usedPOTS - Plain Old Telephone ServiceIt has a greater bandwidth fordownloading than it does for uploadingCablethis is where dedicated fiber-opticcables are used to transfer dataRoutersA router routes the correct datato the correct networkThis connects networksThey tell data packets where to headto get to their destinationIP AdressingEvery node has an IP AddressThis allows data to be sent and received at theright node on the internetWithout them, computers wouldn't knowwhere the data needs to be sent toDNSServersDomain Name SystemChanges domain names toIP AdressesWhen you type a domain name into yourbrowser, the DNS looks up the addressto find its IP AddressYour computer then uses the IPAddress to connect to the websiteBy Josh WatkinsDouble click this nodeto edit the textClick and drag this buttonto create a new node