Assume that more than one application program is using the same communications line on a particular computer. To be able to decide to which application program a message should be delivered on this computer, TCP/IP relies on the:
A)data link layer address
B)port address
C)application layer address
D)network address
E)IP address

Question

Quizplus · Accepted Answer

TCP/IP uses port addresses to distinguish between different application programs using the same communication line. Each application program is assigned a unique port number which is included in the header of the TCP/IP packets. This way, when a message arrives at a computer, the TCP/IP protocol uses the port number to route the message to the correct application program.

Assume That More Than One Application Program Is Using the Same