ECONOMICS

Detailed explanation-1: -FTP works on a client-server model. The FTP client is a program that runs on the user’s computer to enable the user to talk to and get files from remote computers. It is a set of commands that establishes the connection between two hosts, helps to transfer the files, and then closes the connection.

Detailed explanation-2: -FTP transfers require an Internet connection. Downloading files means transferring a file from a server to a computer or device, while uploading is the opposite-transferring a file from a computer to a server.

Detailed explanation-3: -FTP is based on the TCP protocol service, which is a file transfer protocol on the Internet. By default, two ports 20 and 21 are used, a data port and a command port, and port 20 is a data port for file transfer between the client and the server data flow.

Detailed explanation-4: -FTP sends exactly one file over the data connection and then closes the data connection. If, during the same session, the user wants to transfer another file, FTP opens another data TCP connection.