Users Guide
URL
Abbreviation for Uniform Resource Locator (formerly Universal Resource Locator).
USB
Abbreviation for Universal Serial Bus. A USB connector provides a single connection point for multiple USB-compliant devices, such as mice, keyboards, printers,
and computer speakers. USB devices can also be connected and disconnected while the system is running.
utility
A program used to manage system resources—memory, disk drives, or printers, for example.
utility partition
A bootable partition on the hard drive that provides utilities and diagnostics for your hardware and software. When activated, the partition boots and
providesanexecutableenvironmentforthepartition'sutilities.
varbind
An algorithm used to assign an object identifier (OID). The varbind gives rules for arriving at the decimal prefix that uniquely identifies an enterprise, as well
as the formula for specifying a unique identifier for the objects defined in that enterprise's MIB.
variable
A component of a managed object. A temperature probe, for example, has a variable to describe its capabilities, its health or status, and certain indexes that
you can use to help you in locating the right temperature probe.
VGA
Abbreviation for video graphics array. VGA and SVGA are video standards for video adapters with greater resolution and color display capabilities than
previous standards. To display a program at a specific resolution, you must install the appropriate video drivers and your monitor must support the resolution.
Similarly, the number of colors that a program can display depends on the capabilities of the monitor, the video driver, and the amount of video memory
installedforthevideoadapter.
VGA feature connector
On some systems with a built-in VGA video adapter, a VGA feature connector allows you to add an enhancement adapter, such as a video accelerator, to your
system. A VGA feature connector can also be called a VGA pass-through connector.
video adapter
The logical circuitry that provides—in combination with the monitor—yoursystem'svideocapabilities.Avideoadaptermaysupportmoreorfewerfeatures
than a specific monitor offers. Typically, a video adapter comes with video drivers for displaying popular application programs and operating systems in a
variety of video modes.
On some systems, a video adapter is integrated into the system board. Also available are many video adapter cards that plug into an expansion-card
connector.
Video adapters often include memory separate from RAM on the system board. The amount of video memory, along with the adapter's video drivers, may
affect the number of colors that can be simultaneously displayed. Video adapters can also include their own coprocessor for faster graphics rendering.
video driver
A program that allows graphics-mode application programs and operating systems to display at a chosen resolution with the desired number of colors.
Asoftwarepackagemayincludesome"generic"videodrivers.Anyadditionalvideodriversmayneedtomatchthevideoadapterinstalledinthesystem.
video memory
Most VGA and SVGA video adapters include memory chips in addition to your system's RAM. The amount of video memory installed primarily influences the
number of colors that a program can display (with the appropriate video drivers and monitor capabilities).
video mode