U
- unattended installation
An automatic installation that makes use of answer files and uniqueness database files to choose options and enter information previously programmed by an administrator.
- Unicode-Enabled
Follows a standard of character mapping that is universal in nature and applies to all Localizations.
- Uniform Resource Locator Address (URL)
A user-friendly web address that includes the DNS address of a computer and the complete path to the resource located on the computer.
- uninterrupted power supply (UPS)
A battery backup device that provides power to a computer in the event that the power from the power company fails.
- uniqueness database files
Files that contain information specific to a computer. These files can be used to override the settings of an answer file during an unattended installation.
- Universal Serial Bus (USB)
One of the newest methods of transferring data from a computer to a peripheral device. Devices can be daisy chained and can be attached and unattached without shutting down the computer or the peripheral device.
- Unix
One of the first operating systems to be used to provide access to resources on a network. Unix servers are still used today to provide mostly command line-based line-of-business applications for organizations.
- Upgrade Advisor
Software built into Windows XP that checks the hardware and software of a computer for compatibility with Windows XP and creates a report prior to installing the software.
- upgrade installation
A software installation of an operating system or an application that is performed on a computer that already has a previous version of the same software.
- User Accounts
Security principles that identify a user and allow an administrator to assign permissions and audit the user activity within a computer or a network. An individual must have a user account to log on to a computer or a network.
- User Datagram Protocol (UDP)
A connectionless protocol that is part of the TCP/IP protocol suite. UDP works at the Network layer (layer 3) of the OSI model, delivering packets without requiring an acknowledgment. UDP has a much lower overhead in regard to bandwidth used as well as processing time of packets, but it does not provide guaranteed delivery of packets.
- User State Migration Tool
Software included on the Windows XP CD that can be used to capture the configuration settings of a computer and load those settings into other computers. It consists of two components: scanstate and loadstate.