Which of the following is a difference between TFTP and FTP?

A.
TFTP is slower than FTP.

B.
TFTP is more secure than FTP.

C.
TFTP utilizes TCP and FTP uses UDP.

D.
TFTP utilizes UDP and FTP uses TCP.

Explanation:
FTP employs TCP ports 20 and 21 to establish and maintain client-to-server communications, whereas
TFTP makes use of UDP port 69.
Incorrect Answers:A: UDP is faster than TCP is because there is no form of flow control or error correction.
B: TFTP requires no authentication, whereas FTP allows authenticated connections.
C: As stated above, FTP employs TCP ports 20 and 21 and TFTP makes use of UDP port 69.

Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp. 49, 50
http://www.skullbox.net/tcpudp.php