Q: What are the key TCP/IP networking concepts?
This module will cover the fundamental concepts of TCP/IP networking and how it relates to distributed computing.
By the end of this module, you will be able to:

1. Describe in general terms the different layers in the TCP/IP protocol
2. Understand the rules governing IP address classes and netmasks

The TCP/IP model or Internet reference model, is a layered abstract description for communications and computer network protocol design.
It was created in the 1970s by DARPA for use in developing the Internet's protocols.
The structure of the Internet is still closely reflected by the TCP/IP model.