_______ is a process-to-process protocol that adds only port addresses, checksum errorcontrol, and length information to the data from the upper layer.

_______ is a process-to-process protocol that adds only port addresses

1.	_______ is a process-to-process protocol that adds only port addresses, checksum errorcontrol, and length information to the data from the upper layer.
A.	TCP
B.	UDP
C.	IP
D.	none of the above
Answer» C. IP