What is used to uniquely identify a host on a TCP/IP network?

A.
IP address

B.
MAC address

C.
bit pattern

D.
router name

Explanation:
Configuring Internet Protocol

An IP address is the cornerstone of networking because it defines the computer or host you are working on. Today, every computer and many other
devices have such an address. An IP address allows each computer to send and receive information in an orderly and efficient manner.