This chapter covers the following exam topics:
2.0. Basic data center networking concepts
2.1. Compare and contrast the OSI and the TCP/IP models
Much of the work to standardize IP Version 4 (IPv4) occurred in the 1970s—an era when most families did not own a computer and when a home computer with 16 kilobytes of RAM was considered a lot of RAM. At the time, a 32-bit IPv4 address, which could number more than 4 billion hosts, seemed ridiculously large. However, by the early 1990s, the IPv4-based Internet not only showed signs of running out of addresses, but it also risked running out of addresses very soon—endangering the emergence of the global Internet as a worldwide network available to all.
The Internet ...