What are the advantages of using a network?

Sharing devices such as printers saves money.

Site (software) licences are likely to be cheaper than buying several standalone licences.

Files can easily be shared between users.

Network users can communicate by email and instant messenger.

Security is good - users cannot see other users' files unlike on stand-alone machines.

Data is easy to backup as all the data is stored on the file server.

I hope I helped

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explanation:  

an electrode is a metal whose surface serves as the location where oxidation-reduction equilibrium is established between the metal and what is in the solution.