FTP and TFTP
FTP (File Transfer Protocol) and TFTP (Trivial File Transfer Protocol) are industry standard protocols used to transfer files over a network.
They both use a client-server model.
Clients can use FTP or TFTP to copy files from a server.
Clients can use FTP or TFTP to copy files to a server.
As a network engineer, the most common use for FTP/TFTP is in the process of upgrading the operating system of a network device.
You can use FTP/TFTP to download the newer version of IOS from a server, and then reboot the device with the new IOS image.

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