A user wishes to retries a file from an FTP server minimum of how many TCP connections are required to perform this action?

Three TCP connections are not required by the FTP protocol - the standard defines exactly two channels (control and data), so 3 exceeds the minimum.

A single TCP connection cannot fulfill FTP's requirement to separate command signaling from data transfer - the protocol is explicitly designed around two independent channels.

Four TCP connections are not required - FTP uses only two connections (control and data) as its operational minimum, making 4 an incorrect value.

FTP establishes a persistent control connection on TCP port 21 for sending commands (such as USER, PASS, RETR) and receiving server responses, and a separate data connection on TCP port 20 (active mode) or a negotiated ephemeral port (passive mode) for the actual file transfer. Both connections must exist simultaneously to retrieve a file, making 2 the minimum required TCP connections.