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Reference / Glossary

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Cross References
           
unicast n. Transmission of data to a single destination.
 
uniform resource locator (URL) [1] 1. n. A sequence of characters that represent information resources on a computer or in a network such as the Internet. This sequence of characters includes (a) the abbreviated name of the protocol used to access the information resource and (b) the information used by the protocol to locate the information resource. For example, in the context of the Internet, these are abbreviated names of some protocols used to access various information resources: http, ftp, gopher, telnet, and news.
 
uniform resource locator (URL) [2] 2. n. The address of an item on the World Wide Web. It includes the protocol followed by the fully qualified domain name (sometimes called the host name) and the request. The Web server typically maps the request portion of the URL to a path and file name.
 
universal naming convention (UNC) n. In network computing, a name used to identify the server name and the network name (netname) of a resource. This name is in one of the following formats: \\servername\netname\path\filename \\servername\netname\devicename
 
UNIX operating system n. An operating system developed by Bell Laboratories that features multiprogramming in a multiuser environment. The UNIX operating system was originally developed for use on minicomputers but has been adapted for mainframes and microcomputers. The AIX operating system is IBM's implementation of the UNIX operating system.
 
up adj. Working normally (as in: "Is the system up?").
 
uplevel 1. v. To install a more recent version of a program. 2. adj. A more recent version of a program or document.
 
upload 1. v. To transfer programs or data from a connected device, typically a personal computer, to a computer with greater resources. 2. v. To transfer data from a device, such as a workstation or a microcomputer, to a computer.
 
upstream 1. adj. In a network, pertaining to the direction from which data flows. 2. adj. In a hierarchical network structure, pertaining to the location of a network entity that is higher in the hierarchy. For example, a server is upstream from a client.
 
URL See uniform resource locator.
 
user 1. n. Any person or any thing that may issue or receive commands and messages to or from the information processing system. 2. n. Anyone who requires the services of a computing system.
 
user profile 1. n. In computer security, a description of a user that includes such information as user ID, user name, password, access authority, and other attributes obtained at logon. 2. n. In Tivoli User Administration, a profile that is used to manage user accounts, including account information, home directories, startup files, and group membership.
 
user-application network n. A configuration of data processing products, such as processors, controllers, and terminals, established and operated by users for the purpose of data processing or information exchange, which may use services offered by communication common carriers or telecommunication administrations.
 
userid ("you-zer-eye-dee") n. A nickname that identifies a user to a computer system and other users.
 
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