How do TCP and UDP differ in the way that they establish a connection between two endpoints?
A . TCP uses synchronization packets, and UDP uses acknowledgment packets
B . UDP uses SYN, SYN ACK and FIN bits in the frame header while TCP uses SYN, SYN ACK and ACK bits
C . UDP provides reliable message transfer and TCP is a connectionless protocol
D . TCP uses the three-way handshake and UDP does not guarantee message delivery
Answer: D