COMPUTER NETWORKING

Detailed explanation-1: -Thus, with FTP, the control connection remains open throughout the duration of the user session, but a new data connection is created for each file transferred within a session (i.e., the data connections are non-persistent). Throughout a session, the FTP server must maintain state about the user.

Detailed explanation-2: -The control connection remains connected during the entire interactive FTP session. The data connection is opened and then closed for each file transferred. It opens each time commands that involve transferring files are used, and it closes when the file is transferred.

Detailed explanation-3: -FTP opens two connections between the computers − one for the commands and replies (control connection) and a second one for data transfers (data connection). FTP is built on a client-server model architecture using the control connection and data connection between the client and server.