F_Port

Fabric port or F_Port within a fibre channel fabric is a switch used to connect an N_Port to a switch. F_Ports are intermediate ports in virtual point-to-point links between end ports and can only be attached to N_Ports.

File virtualization

Refers to the creation of an abstract layer between file servers and clients that access those file servers.

FTP

File transfer protocol or FTP allows you to transfer files between two computers on the Internet.