Section: Core

17) If you are able to use FTP, this verifies that which transport protocol is functioning?

1. IP
   
2. IPX
   
3. TCP
   
4. NWLink
   

Remember, FTP also allows for access in both directions. FTP teams up with Telnet to transparently log you on to the FTP server and then provides for the transfer of files. Accessing a host is only the first step. Users must then be subjected to an authentication login that's probably secured with passwords and usernames placed there by the systems administrator to restrict access. FTP is part of the TCP/IP stack, and since it is connection oriented, it can verify that TCP is functioning.

Exam Objective: 2.4 Explain common TCP and UDP ports, protocols, and their purpose.