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I think you might want to read how bit and bytes work to understand that process...

this is a good site: http://computer.howstuffworks.com/bytes.htm

Dont miss the link at the bottom "Next...

What do you mean how is it sent through a network ? In Binary data of course, like everything else in the PC world :). Or do you mean How-How it's sent, e-mail ? Direct Connect ? Folder-Sharing ?

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