Which TCP/IP application layer protocol is commonly used to transfer files between a client and a server?

Which TCP/IP application layer protocol is commonly used to transfer files between a client and a server?

• A. TELNET
• B. FTP
• C. HTTP
• D. DNS

Answer: (B)

Transferring files between a client and a server is what FTP is built for. It runs at the application layer over TCP and sets up a control connection for commands and a separate data connection for the actual file transfer, making uploading and downloading files straightforward and reliable. Telnet is for remote command-line access, not file movement. HTTP delivers web resources and can transfer files, but its primary role isn’t as a dedicated file-transfer protocol. DNS maps domain names to IP addresses, with no file transfer involved. So FTP is the best fit for transferring files.

Transferring files between a client and a server is what FTP is built for. It runs at the application layer over TCP and sets up a control connection for commands and a separate data connection for the actual file transfer, making uploading and downloading files straightforward and reliable. Telnet is for remote command-line access, not file movement. HTTP delivers web resources and can transfer files, but its primary role isn’t as a dedicated file-transfer protocol. DNS maps domain names to IP addresses, with no file transfer involved. So FTP is the best fit for transferring files.