reliable environment compared to previous versions of Windows. There are two versions of Windows XP: home and professional. The Professional Edition focuses on reliability and security, while the Home edition includes features for digital photography, digital music, digital video, home networking and communications. In both editions there are also mobility capabilities, which include a plug and play feature for wireless network connectionscable. This operating system uses the 802.1x wireless security standard. Windows based terminal Windows based terminals are the cheapest thin clients to operate because there are no applications running on the computer. This technology standard is based on
specifications issued by Microsoft which were developed together with Wyse Technology, NCD, other thin client companies. WinSock WinSock is (Windows socket service) is software that acts as a link between Windows applications (such as FTP, Web browsers, Talnet, and so on) with Internet protocols, especially TCP/IP. WinSock makes it easier for programmers in the Windows environment to design network applications. This software is usually stored in a file with the name WinSock.dll. WinZip
WinZip is a compression program that runs in the Windows environment which is used to compress and decompress files that have been compressed. wireframes Wireframes are used in images in CAD (computer-aided design) and 3- dimensional graphics. The visible image consists of a framework called a wireframe. During development, graphic design uses wireframes for speed of display on the screen. The image is displayed by covering the frame with a certain shadow (color) or texture. Wireless Ethernet Compatibility Alliance
See WECA wireless fidelity see Wi-fi wireless local-area network see WLAN Wizards A wizard is an interactive help utility that guides the user in completing a fairly complex process, such as configuring a new piece of hardware installed on a computer.
The wizard is usually implemented in a series of dialog boxes where the user continues the process or returns to the previous process by entering the required data. In this way, tasks that are quite complex and require special expertise can be simplified. WLAN WLAN (wireless local-area network) is a type of LAN that uses high-frequency radio waves (wireless) to communicate between nodes. WMF Vector graphics file format for exchanging graphics between Windows applications.
WMF (Windows Metafile Format) can also contain bitmap images. Word Processor See word processor. Work Breakdown Structure See WBS. Workstations In computer networks, workstations are computers connected to a local-area network (LAN).
The term workstation is also used to refer to computers used for engineering applications (CAD/CAM), desktop publishing, software development, and other applications that require a fairly high level of computing and graphics capabilities. Workstations typically consist of a large graphics display with high revolutions, at least 64 MB RAM, built-in network support, and a graphical user interface. Most workstations also have a storage device such as a disk drive, but a special type of workstation, called a diskless workstation, does not have a disk drive. The operating systems that are widely used for workstations are UNIX and Windows NT. Like PCs, most
workstations are single user computers. However, workstations are basically connected to a local area network, although they can also be stand-alone systems. World Wide Web Consortium See W3C. Worms A worm is a program that uses itself through a computer network and usually performs undesirable actions, such as consuming computer resources or shutting down the system.
WORMS WORM write once, read many is an optical disk technology that can only be used to store data once, but the data can be read many times. WORM disks do not have standards, unlike CD-ROMs. This means that data stored on WORM can only be read with the same drive used to store the data on it: WORM is also called CD-R. WYSIWYG The term WYSIWYG what you see is what you get refers to technology that makes it possible to display an image or text format on a screen exactly as if the text format image were printed.
Web Banners A web banner or banner ad is a form of advertising on the World Wide Web. This form of online advertising entails embedding an advertisement into a web page. It is intended to attract traffic to a website by linking them to the web site of the advertiser. The advertisement is constructed from an image (GIF, JPEG, PNG), JavaScript program or multimedia object employing technologies such as Java, Shockwave or Flash, often employing animation or sound to maximize presence. Images are usually in a high-aspect ratio shape. That is to say, either wide and short, or tall and narrow, hence the reference to banners. These images are usually placed on web pages that have interesting content, such as a newspaper article or an opinion piece. The web banner is displayed when a web page
that references the banner is loaded into a web browser. This event is known as an “impression”. When the viewer clicks on the banner, the viewer is directed to the website advertised in the banner. This event is known as a “click through”. In many cases, banners are delivered by a central ad server. Many banner ads work on a click-through payback system. When the advertiser scans their logfiles and detects that a web user has visited the advertiser's site from the content site by clicking on the banner ad, the advertiser sends the content provider some small amount of money (usually around five to ten US cents). This payback system is often how the content provider is able to pay for the Internet access to supply the content in the first place. Web banners function the same way as traditional advertisements are intended to function:
notifying consumers of the product or service and presenting reasons why the consumer should choose the product in question, although web banners differ in that the results for advertisement campaigns may be monitored real- time and may be targeted to the viewer's interests. Many web surfers consider these advertisements as highly annoying because they distract from a web page's actual content or waste bandwidth. Newer web browsers often include options to disable pop-ups or block images from selected websites. Another way of avoiding banners is to use a proxy server that blocks them, such as Privoxy. X XGA
XGA Extended graphics array is a high resolution graphics standard introduced by IBM in 1990. XGA was designed to replace the 8514/A video standard. XGA can be provided with the same resolution as 8514/A (640X480 or 1024 X 768 pixels). But the XGA supports more colors (65 thousand compared to the 8514/A which only supports 256 colors). XGA also allows monitors to be set. Xmodem Xmodem is a computer for sending files while using direct dial-up communication. Xmodem was developed by Ward Christensen in 1977. Xmodem has error checking capabilities which ensure that the information sent is not lost or compromised forever. Xmodem sends data
in blocks of 128 bytes. Xmodem has improved capabilities: Xmodem CRC uses a more reliable error checking scheme, and Xmodem 1K is capable of sending 1,024 byte blocks of data. xkill (in xwindow terminal) Killing GUI-based programs with the mouse (place your mouse pointer on the window you want to kill then click) Y Ymodem Ymodem is a protocol for sending files while using direct dial-up communications. Ymodem is capable of
transmitting data in blocks of 1,024 bytes and is therefore faster than Xmodem. However, Ymodem is not good enough to use on noisy telephone lines. The Ymodem -Batch version can send multiple files with each transmission, and the Ymodem-G does not include error correction, but uses hardware-based error correction on the modem, making it faster. Yottabyte One Yottabyte is equal to 280 bytes or almost the same as 1024 (1,000,000,000,000,000,000,000,000) Bytes. one Yottabyte is equal to 1,024 zettabytes. Z
zettabyte One Zettabyte is equal to 270 bytes or almost the same as 1021 (1,000,000,000,000,000,000,000) bytes. one zettabyte is equal to 1,024 exabytes. Zmodem Zmodem is a protocol for sending files while using direct dial-up communications. This Zmodem is better than Xmodem and Ymodem in terms of speed and error checking. Zmodem can also resume sending files that were interrupted before they were completed.