Which of the following describes the appropriate port assignment and message exchange in a
standard TFTP transaction?

A.
Server: 10.0.0.1:69 RRQ/WRQ SentClient: 10.0.0.2:1888 RRQ/WRQ Received

B.
Server: 10.0.0.1:1888 RRQ/WRQ Received Client: 10.0.0.2:69 RRQ/WRQ Received

C.
Server: 10.0.0.1:69 RRQ/WRQ Received Client: 10.0.0.2:69 RRQ/WRQ Sent

D.
Server: 10.0.0.1:69 RRQ/WRQ Received Client: 10.0.0.2:1888 RRQ/WRQ Sent

E.
Server: 10.0.0.1:1888 RRQ/WRQ Sent Client: 10.0.0.2:69 RRQ/WRQ Sent

F.
Server: 10.0.0.1:1888 RRQ/WRQ Received Client: 10.0.0.2:69 RRQ/WRQ Sent

Explanation:
TFTP Daemons listen on UDP port 69 but respond from a dynamically allocated high port.
Therefore, enabling this port will allow the TFTP service to receive incoming TFTP requests but
will not allow the selected server to respond to those requests. Allowing the selected server to
respond to inbound TFTP requests cannot be accomplished unless the TFTP server is configured
to respond from port 69.

http://en.wikipedia.org/wiki/Trivial_File_Transfer_Protocol
http://social.technet.microsoft.com/Forums/en-CA/configmgrosd/thread/9b9bd9e2-6b2e-4073-
96af-2703ad6a3249