How do computer network help us?

Computer Networks are useful in for instance a bank or office as they need to be able to have a shared area where data collected by some of them will be able to be used by the other workers.Networks are also important in schools with lots of computer rooms as it means the children can log on to any computer and have their own protected folder. Also it means that they can put their computer work into the shared area so that the teacher can mark it without having a massive pile of papers or books.I hope this answers your question