The Port Numbers in TCP and UDP uniquely identify:

a. the TCP/UDP version.

b. the Application protocol using TCP/UDP.

c. the IP protocol below TCP/UDP.

d. the router port number and type, such as Ethernet, Wi-Fi, etc.

Option (b) is the correct answer to the given question.

Explanation:

The main objective of the port number in the transmission control protocol or the user datagram protocol is clearly defining the particular process with which the information must be given.

The primary function of the Transmission control protocol or the user datagram protocol port numbers is to monitoring at the same time the various responses that passing the network. So, by using the TCP / UDP, we can find the e application protocol.

All the other option are not identified by the TCP and UDP so these are incorrect option.