What is the port used by traditional FTP?

What is the port used by traditional FTP?

• A. 22
• B. 23
• C. 21
• D. 80

Answer: (C)

The port used by traditional FTP (File Transfer Protocol) is 21. This is the standard port designated for initiating FTP connections, allowing users to transfer files between a client and a server. When a client wants to connect to an FTP server, it does so by sending commands to port 21, which manages the control connection for the session. Other ports mentioned, such as 22, are associated with secure file transfer protocols like SFTP (Secure File Transfer Protocol) or SSH (Secure Shell), while port 23 is used for the Telnet protocol, which is unrelated to file transfer. Port 80 is typically used for HTTP traffic, serving web pages but not for file transfers, making port 21 distinctly recognized as the default for traditional FTP activities. In summary, understanding that port 21 is specifically reserved for FTP communications underscores its critical role in enabling file transfer operations over the Internet.

The port used by traditional FTP (File Transfer Protocol) is 21. This is the standard port designated for initiating FTP connections, allowing users to transfer files between a client and a server. When a client wants to connect to an FTP server, it does so by sending commands to port 21, which manages the control connection for the session.

Other ports mentioned, such as 22, are associated with secure file transfer protocols like SFTP (Secure File Transfer Protocol) or SSH (Secure Shell), while port 23 is used for the Telnet protocol, which is unrelated to file transfer. Port 80 is typically used for HTTP traffic, serving web pages but not for file transfers, making port 21 distinctly recognized as the default for traditional FTP activities.

In summary, understanding that port 21 is specifically reserved for FTP communications underscores its critical role in enabling file transfer operations over the Internet.