What does upload mean and How is it done?
Uploading means data is being sent from your computer to the Internet. Examples of uploading include sending email, posting photos on a social media site and using your webcam. Even clicking on a link on a web page sends a tiny data upload. Downloading means your computer is receiving data from the Internet.
What does it mean to upload a document?
Uploading is the transmission of a file from one computer system to another, usually larger computer system. From a network user's point-of-view, to upload a file is to send it to another computer that is set up to receive it.