1.

FTP uses _________ parallel TCP connections to transfer a file.(a) 1(b) 2(c) 3(d) 4

Answer» The correct choice is (b) 2

To elaborate: Control connection using FTP port: 21, and data connection using FTP port: 20. The FTP session is started or ended using port 21 and the actual data i.e. files are sent through port 20.


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