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`1“The Most Comprehensive A—Z
`§ icosmruterREfem Available”;
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`FREE cn-ROM
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`‘ DEFINITIONS AND ‘
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`ILLUSTRATIONS!
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`More than 10,000 terms clearly
`andaccuratdydefined
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`,
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`"
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`Hundreds of illustrations help
`explain devices and clarify concepts
`Covers emerging trends and topics
`to keep you on top of the latest
`developments in computing
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`definitions on CD!
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`Osborne /McGraw-Hill
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`Computer Desktop Encyclopedia, Ninth Edition
`
`Copyright © 2001 by The McGraW—Hill Companies. All rights reserved. Printed in the
`United States of America. Except as permitted under the Copyright Act of 1976, no part
`of this publication may be reproduced or distributed in any form or by any means, or
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`1234567890 DOC DOC 901987654321
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`Book p /n 0—07—219307—7 and CD p/n 0-07—219308-5
`parts of
`ISBN 0-07—219306-9
`
`Publisher
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`Computer Designers
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`Illustrators
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`Information has been obtained by Osborne/McGraw—Hill from sources believed to be reliable. However, because of the
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`
`
`HTML editor
`
`435
`
`optical disk
`
`
`
`
`disk capacity and moves data from one storage level to the next based
`magnetic disk
`‘
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`on age, category and other criteria as specifiedbythenetworkor system
`i .r
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`administrator. HSM oftenincludes a system for routine backup as well.
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`When a file is moved off the hard disk, it is replaced with a small stub
`file that indicates where the original file is located.
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`(Hosting Service Provider) An organization that specializes in
`HSP
`hosting Web sites. There are various levels of offerings from sharing a
`‘ Web server with several other companies to having a dedicated Web
`server or to providing co—location services. See co—locatian.
`
`
`(Hot Standby Router Protocol) A protocol from Cisco for
`HSRP
`’
`switching to a backup router in the event of failure.
`Data Migration
`A datamigration path ".1 an HSM system might be
`HSSI
`(High-Speed Serial Interface) A serial interface with
`from high-speed hard dlsk to slower speed optical
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`.
`52 Mb
`It .
`ft
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`disk to offline tape. In time, optical disks will
`transnussmn rates up to
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`is 0 en use .to connect one or
`almost surely replace magnetic media, but there
`more LAN routers and network dev1ces to a T3 line, wluch provrdes
`will still be a need to take data off premises for
`44.736 Mbps. A T3 multiplexor using HSSI can divide the T3
`protection against fire and accidents.
`bandwidth into the appropriate speeds of the various devices.
`HST
`(1) An asymetrical modem protocol from US. Robotics that includes error control and compression, and
`transmits from 4,800 to 14,400 bps in one direction and from 300 to 400 bps in the other. HST was the first reliable,
`high—speed modem protocol before the V.32bis and v.42 standards became widely used.
`(2) (Hubble Space Telescope) Launched in April 1990, it views star material some 10 to 12 billion light years from earth.
`
`HSV (Hue Saturation Value) A color model similar to HSB. See HSB.
`
`HTM file An alternate file extension for HTML files. HTML files originated with UNIX, where Web pages are
`commonly identified with an .HTML extension. The .HTM is an alternate in the Windows world, because three—byte
`extensions (.EXE, .DOC, etc.) are so commonly used.
`
`HTML
`(HyperText Markup Language) The document format used on the World Wide Web. Web pages are built
`with HTML tags (codes) embedded in the text. HTML defines the page layout, fonts and graphic elements, as well as
`the hypertext links to other documents on the Web. Each link contains the URL, or address, of a Web page residing on
`the same server or any server worldwide, hence "World Wide” Web.
`‘
`HTML 2.0 was defined by the Internet Engineering Task Force (IETF) with a basic set of features, including
`interactive forms capability. Subsequent versions added more features, such as blinking text, custom backgrounds and
`tables of contents. However, each new version requires agreement on the tags used, and browsers must be modified to
`implement those tags.
`HTML is not a programming language like Java or JavaScript (if this, do that), rather it could be considered a
`”presentation language.” HTML is derived from SGML, the Standard Generalized Markup Language, which is widely
`used to publish documents. HTML is an SGML document with a fixed set of tags that, although change with each new
`revision, are not flexible.
`'
`A subset of SGML, known as XML, allows the developer of the page to define the tags, and HTML 4.0 and XIVIL 1.0
`have been combined into a single format called ”XHTML,” which is expected to become the standard format for Web
`pages. XHTML also enables Web pages to be developed with different sets of data so that handheld devices, with
`limited screen sizes, can download abbreviated pages. See HTML tag, CGI script, VRML and XML.
`
`HTML bug
`See Web bug.
`HTML editor A low-level Web site authoring tool that is essentially a text editor, specialized for writing HTML
`code. it assists the HTML author by cataloging all HTML tags and common structures in menus, and by being able to
`catch certain syntax errors. It often displays tags and contents in colors so they pop out for easy reference. See Web
`authoring software.
`w.
`
`Computer Desktop Encyclopedia
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`New Bay Capital, LLC-EX.1023
`
`

`

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`<p><£ont face-e
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`HTML e-mail
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`WWW
`HTML e-mail An e—mail message formatted as a
`Web page (HTML document). It allows the publishing
`of more elaborate newsletters and reports, and sending
`them via email. In order to View an HTML e—mail
`message, the e—mail program must support it. See
`BubbleBoy virus.
`.WW.W
`HTML extension file An HTML file that is
`filled with data from a database by the Internet
`Database Connector (IDC) component of Microsoft’s
`Internet Information Server (HS) Web server. The
`HTML extension file (.HTX file), which uses specific
`tags for IDC, is returned to the user’s browser.
`See IDC.We...
`
`HTML table An HTML structure for creating
`rows and columns. It is used for lists, specifications,
`and other tabular data as well as to locate elements
`on the page. The table command gives the HTML
`designer reasonably precise control over placement
`of text and images.'I-ITML tables are built using the
`<TABLE> tag to define the overall table and then the
`1d each row. The Table
`Table Row <TR> tag to bui
`Data <TD> tag defines the actual data.
`
`HTML tag A code used in HTML to define a
`format change or hypertext link. HTML tags are
`surrounded by the angle brackets, < and >.
`
`(HyperText Transport Protocol) The
`HTTP
`communications protocol used to connect to servers
`on the World Wide Web. Its primary function is to
`establish a connection with a Web server and
`transmit HTML pages to the client browser.
`Addresses of Web sites begin with an http:/l prefix;
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` For Experts and Novices The
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`Encyclopedia contains more
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`illustrations. photos, charts and
`
`
`diagrams. It covers the field from
`
`
`micro to mainframe and runs
`
`
`under Windows. We update
`
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`can't escape computer and
`telecom lingo in this day and
`ageThe Encyclopedia covers
`only the high—tech world. but
`makes it interesting for
`everyone.
`
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`quarterly, Everyone Needs Thls You
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`WEB SERVER
`(HTTP server)
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`Web Server Fundamentals
`'th Web servers via the TCP/lP
`Web browsers communicate w
`l. The browser sends HTTP requests to the server,
`protoco
`L pages and possibly additional
`which responds with HTM
`ActiveX controls or Java applets.
`programs in the form of
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`HTML Tags
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`below it are coded. All
`0 digital systems lnc.,
`Assistant Pro from Exit
`symbols. HTML
`to view this source code.
`the HTML editor used
`(www.exit0.com), is
`
`Computer Desktop Encyclopedia
`
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`New Bay Capital, LLC-EX.1023
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