Explain why there is no such thing as TCP/IP.

What will be an ideal response?

TCP over IP is really many other things, such as HTTP, DHCP, POP, and about 500 more terms over TCP, plus UDP and ICMP over IP. Given that this overly complex but much more correct term is too hard to use, the people who invented this network protocol stack decided to call it TCP/IP, even though that term is way too simplistic to cover all the functionality involved. There is a strong movement toward using the term Internet Protocol instead of the term TCP/IP.