Final answer:
The four types of preprint communication networks include social networking, bookmarking, social news, media sharing, microblogging, and online forum sites. The pre-internet foundation was laid by the ARPANET and the work of visionaries like Ted Nelson who conceptualized the early form of hypertext. The formalization of these concepts ultimately led to the creation of the World Wide Web.
Step-by-step explanation:
In the late 1960s and 1970s, the preprint communication networks were crucial in establishing the foundation for modern computer networking. Networks like the ARPANET, initiated in 1969, were pivotal in linking government and academic facilities via a network system meant for official use. Despite restrictions on commercial and political traffic, email was used for personal communication among researchers. Ted Nelson, a pioneer of computer science, laid down the groundwork for what became hypertext and the web. His concept involved a 'master' record of documents, with all copies, or 'transclusions', referencing back to this original to reduce duplication.
As for the four different types of preprint communication networks mentioned in the question, they refer to platforms that allow varying forms of digital interaction and content exchange. These include social networking, bookmarking, social news, media sharing, microblogging, and online forum sites. These forms of communication networks have revolutionized the way information is disseminated and shared across the globe.
The evolution of networks continued with the standardization of communication protocols in 1982, leading to the birth of the Internet. By the end of the 1980s, the Internet had further evolved to host the World Wide Web, a vast network consolidating interlinked hypertext pages displaying data, images, videos, and even sound, marking a significant leap in information technology and digital communication.