Fermat’s Library | Why the Internet only just works annotated/explained version.

etwork was theARPAnet, which was used to come to grips with themain architectural issues that would go on to be thebasis of the Internet. The basic protocol that underlaythe ARPAnet was NCP [1], which combined addressingand transport into a single protocol. Many of the higher-level protocols that would go on to become common

Source: Fermat’s Library | Why the Internet only just works annotated/explained version.