Home » CCNA Final Practice Exam Questions and Answers » Which protocol uses tcp port 21 Which protocol uses tcp port 21 Unknown 1:47 AM CCNA Final Practice Exam Questions and Answers STP (spanning tree protocol)FTP (File Transfer Protocol)TFTP (Trivial File Transfer Protocol)VTP (vlan trunking protocol) Share: Facebook Twitter Google+ StumbleUpon Digg Delicious LinkedIn Reddit Technorati
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