Question

Multiple processes on destinations at transport layer are identified by __________

(a) Mac address

(b) Port number

(c) Host number

(d) Host address

This question was addressed to me in an interview for internship.

Origin of the question is P2P Applications in chapter TCP/IP Protocol Suite of Computer Network

Answer 1

Correct answer is (b) Port number

Explanation: Multiple processes on destinations are identified by a transport layer address also called as port number. The IP address along with the port number is called the socket address.