Operating instructions

Windows NT The precursor to Windows 2000, XP, and Vista, which intro
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duced many important features (such as HAL and NTFS) used in all later ver
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sions of Windows.
Windows Vista The latest version of Windows; comes in many different
versions for home and office use, but does not have a Server version.
Windows XP The version of Windows that replaced both the entire Windows
9x line and Windows 2000; does not have a Server version.
WINS (Windows Internet Name Service) A name resolution service that
resolves NetBIOS names to IP addresses.
word A unit of 16 binary digits or two bytes.
worm A worm is a very special form of virus. Unlike other viruses, a worm
does not infect other files on the computer. Instead, it replicates by making cop-
ies of itself on other systems on a network by taking advantage of security weak-
nesses in networking protocols.
WQUXGA Video display mode of 2560 × 1600.
WS (wait state) A microprocessor clock cycle in which nothing happens.
WSXGA Video display mode of 1440 × 900.
WSXGA+ Video display mode of 1680 × 1050.
WUXGA Video display mode of 1920 × 1200.
WVGA Video display mode of 800 × 480.
WWW (World Wide Web) A system of Internet servers that support docu
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ments formatted in HTML and related protocols. The Web can be accessed using
Gopher, FTP, HTTP, Telnet, and other tools.
WXGA Video display mode of 1280 × 800.
xD-Picture Card A very small flash media card format developed by Olympus
and Fujifilm. xD stands for Extreme Digital.
Xeon A line of Intel CPUs designed for servers.
GLOSSARY 73
Passport / Mike Meyers‘ A+ Certification Passport / Meyers / 226308-3 / Glossary
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