By Bryan Pfafi'e11berge1/, P/1.D.
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`WI LEY
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`Wiley Publishing, Inc.
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`Exhibit 2004
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`COMPUTER
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`DICTIONARY
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`10TH EDITION
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`Webster’s New World"' Computer Dictionary, 10th Edition
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`Copyright © 2003 by Wiley Publishing, Inc., Indianapolis, Indiana
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`Published by Wfley Publishing, Inc., Indianapolis, Indiana
`Published simultaneously in Canada
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`ISBN 0—7645—2478—X
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`l\/Ianufactured in the United States of America
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`5432
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`353
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`stack
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`SSL Acronym for Secure Sockets Layer.
`An Internet security standard that is widely
`supported by leading Web browsers and
`Web servers. Unlike its chief competi-
`tion, S—HTTP, SSL is
`application~in—
`dependent—-it works with all
`Internet
`tools, not
`just
`the World Wide Web
`This is because SSL functions at
`the network layer rather than the applica-
`tion layer and is
`thus available to any
`SSL—ready Internet application, including
`newsreaders. Applications that use SSL use
`RSA public key encryption and RSA cer-
`tificates and digital signatures to establish
`the identities of parties to the transaction;
`after the link is established, a key exchange
`takes place, and RSA’s RC4 encryption
`technology (a symmetric key encryption
`algorithm) is used to secure the transaction.
`With the 128-bit keys used for SSL com-
`munication within the United States, the
`
`sequel.)
`pronounced
`SQL (Often
`Acronym for Structured Query Language.
`In database management systems, an IBM-
`developed query language that has become
`the de facto standard for querying databases
`in a client/server network. The four basic
`cornrnands (SELECT, UPDATE, DELETE,
`and INSERT) correspond to the four basic
`functions of data manipulation (data
`retrieval, data modification, data deletion,
`and data insertion,
`respectively). SQL
`queries approximate the structure of an
`English natural—language query. A data table
`consisting of columns (corresponding to
`data fields) and rows (corresponding to data
`records) displays a que1y’s results. See data-
`base management system (DBMS), ODBC,
`query, query language.
`
`squelch In a network, to suspend or can-
`cel a problem user’s access privileges. A
`network might squelch such privileges after
`a user repeatedly violates the terms under
`which the account was created.
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`SRAM Acronym for static random access
`memory.A type of random access memory
`(RAM) chip that holds its contents without
`constant refreshing from the central pro-
`cessing unit (CPU). Although as volatile as
`dynamic random access memory (DRAM)
`chips, SRAM does not require the CPU to
`refresh its contents several hundred times
`
`per second. These chips are substantially
`faster but also are significantly more expen-
`sive than DRAM chips and, therefore, are
`most often used for RAM caches. Two
`
`types of SRAM are available: asynchronous
`and synchronous. Unlike asynchronous
`SRAM, synchronous SRAM is significantly
`faster because it is capable of synchronizing
`with the microprocessor’s clock speed,
`enabling it to perform operations that are
`timed by the system clock;. See cache memo-
`ry, DRAM, SDRAM.
`
`S register A special unit of memory
`inside a modem that contains alterations to
`the AT command set, such as the number of
`rings to wait before answering a call or the
`time to wait for the carrier to be established.
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`encrypted transaction would be computa-
`tionally infeasible to decode, so it is safe
`from snoopers and criminals. (The 40-bit
`version used in export versions of popular
`browsers, however, is not secure and should
`be avoided for commercial transactions.)
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`ST-506/ST—412 A hard disk interface
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`standard once widely used in IBM and
`IBM-compatible computers. These drives,
`virtually unavailable today, are slower and
`cheaper than drives that use more recent
`interface standards, such as Enhanced
`System Device Interface (ESDI), Integrated
`Drive Electronics
`(IDE),
`and Small
`Computer System Interface (SCSI). The
`ST—506/ST—4l2 interface uses the Modified
`Frequency Modulation (MFM) and Run-
`Length Limited (RLL) standards.
`
`stack In programming, a data structure in
`which the first items inserted are the last
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`ones removed. Programs that use control
`structures use the Last In First Out (LIFO)
`data structure.A stack enables the computer
`to track what
`it was doing when it
`branched or jumped to a procedure. In
`I-IyperCard, the term refers to a file that
`contains one or more cards that share a
`common background.
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`
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`SSE See streaming S11’/ID extensions