What device is used to transfer files over the internet easily?

The choice of FTP, or File Transfer Protocol, as the device used to transfer files over the internet easily is accurate because it is specifically designed for this purpose. FTP is a network protocol that allows users to transfer files between computers on a TCP/IP network, such as the internet. It provides a standard method for sending and receiving files, making it a widely used tool for web developers, system administrators, and others who need to upload or download files to and from a server efficiently.

FTP operates by establishing a connection between a client and a server, enabling the seamless transfer of data. Users can easily navigate directories on the server and initiate uploads or downloads, making it convenient for large file transfers and batch processing. This functionality is not typically offered by other options like SD cards or USB cables, which are more suited for local file transfers, or routers, which facilitate network connectivity rather than specific file transfer tasks.