Which order accurately represents milestone events in the development of the Internet?

The correct sequence of milestone events in the development of the Internet begins with the birth of ARPANET, which was the first operational packet-switching network and the predecessor to the modern Internet. It laid the foundational framework for how data packets could be transmitted across networks.

Following the establishment of ARPANET, the TCP/IP (Transmission Control Protocol/Internet Protocol) specifications were created in the 1970s. These protocols established the standards for how data should be sent and received over networks, effectively forming the backbone of Internet communications. Their adoption is considered a pivotal moment in ensuring that diverse networks could communicate with one another, which is essential for the functioning of the Internet as we know it.

Next in the timeline is the development of the Domain Name System (DNS) in the 1980s, which provided a way to translate user-friendly domain names into IP addresses that computers use to identify each other on the network. DNS greatly simplified the process of navigating the Internet, making it more accessible to an average user.

Finally, the World Wide Web (WWW) being officially open to the public in the early 1990s illustrated a monumental shift, as it transformed the way information was shared and accessed online, driving a massive increase in Internet usage.