FTP is an acronym for File Transfer Protocol. As the name suggests, FTP is used to transfer files between computers on a network. You can use FTP to exchange files between computer accounts, transfer files between an account and a desktop computer, or access online software archives.
Consequently, what is port 21 and 20 for FTP?
The FTP protocol uses a pair of connections between the FTP client and FTP server. The connection with the FTP server's port 20 is the second connection created during an FTP session, the first one being to the server's port 21.
What do you mean by file transfer What are protocols?
The File Transfer Protocol (FTP) is a standard network protocol used for the transfer of computer files between a client and server on a computer network. FTP is built on a client-server model architecture and uses separate control and data connections between the client and the server.
Is FTP a TCP or UDP protocol?
FTP itself uses the TCP transport protocol exclusively, or in other words, it never uses UDP for its transport needs. Typically an application layer protocol will use one or the other. One notable exception to that is DNS or Domain Name System. FTP also is odd in the fact that it uses two ports to accomplish its task.