Glossary - Index U
Unix: Described by one of its developers as "a weak pun on Multics" (which was an experimental, time-sharing operating system at Bell Labs in the 1960s), Unix took off in the early 1970s as a general-purpose operating system. Since much of the Internet is hosted on Unix machines, the OS took on a new surge of popularity in the early 1990s.
Unix comes in many flavors and runs on a variety of platforms, which makes its development a subject of widespread discussion.
Unzip: To decompress a file that has been compressed using the zip format. Tools like WinZip or WinRar can extract these.
Uplink Port: Special port on a hub or switch that connects to another hub or switch to expand port density.
USB: Universal Serial Bus - High speed plug and play standard that supports data transfer rates of 12 Mbps. A single USB port can be used to connect up to 127 peripheral devices, such as mice, modems, and keyboards. USB also supports Plug-and-Play installation and hot plugging.
Usenet: Usenet is a worldwide network of thousands of Unix systems with a decentralized administration. The Usenet systems exist to transmit postings to special-interest newsgroups covering just about any topic you can imagine (and many you wouldn't even want to imagine).