An administrator needs to examine ftp commands being passed to a server. what port should the administrator be monitoring?

The server-PI (Server Interpreter) is the process that listens to port 21 on the FTP server. The Server Interpreter has control over server-DTP (Server Data Transfer Process), the method used for data transfer connection. The server-PI must be in a position to respond to standard FTP commands like USER and PASS and several other commands.

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explanation:

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