... used on the network is also shared. An organisation has to pay a network license fee for the software but this still works out cheaper than buying software for each individual machine. It also allows email, which is the way that much day-to-day communication takes place. But it's not all good. The organisation has to pay technical staff to maintain the network. User accounts need to be added and deleted as people join and leave an organisation. Because users' data is stored on the hard drives in the servers these need to be backed up regularly or there would be a public outcry if it were lost. Networks fail occasionally and then no one in the organisation can use the computers. As more users log onto the network, the servers have to share their time among them and the system may slow down. Users forget their passwords and can't log on, ...

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