<?xml version="1.0" encoding="iso-8859-1"?>
<!--
$FreeBSD$
FreeBSD Glossary Terms
Please keep this file sorted alphabetically/ASCIIly by glossterm.
glossterms that are acronyms should have two entries - one for
the expanded acronym and another for the acronym itself. The
second of these should reference the entry for the expanded acronym
via a glosssee element. For example:
<glossentry>
<glossterm>FUBAR</glossterm>
<glosssee otherterm="fubar-glossary">
</glossentry>
<glossentry id="fubar-glossary">
<glossterm>Fuc... Up Beyond All Recognition</glossterm>
<acronym>FUBAR</acronym>
<glossdef>
<para>Broken.</para>
</glossdef>
</glossentry>
Note that in this instance, the expanded acronym sorts below the
unexpanded acronym. That's OK.
Finally, id attribute values should end in the string
"-glossary" to avoid conflicting with id attribute values in
the main text.
-->
<glossary xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0" status="draft" xml:id="freebsd-glossary">
<title>&os; Glossary</title>
<para>This glossary contains terms and acronyms used within the &os;
community and documentation.</para>
<glossdiv>
<title>A</title>
<glossentry>
<glossterm>ACL</glossterm>
<glosssee otherterm="acl-glossary"/>
</glossentry>
<glossentry>
<glossterm>ACPI</glossterm>
<glosssee otherterm="acpi-glossary"/>
</glossentry>
<glossentry>
<glossterm>AMD</glossterm>
<glosssee otherterm="amd-glossary"/>
</glossentry>
<glossentry>
<glossterm>AML</glossterm>
<glosssee otherterm="aml-glossary"/>
</glossentry>
<glossentry>
<glossterm>API</glossterm>
<glosssee otherterm="api-glossary"/>
</glossentry>
<glossentry>
<glossterm>APIC</glossterm>
<glosssee otherterm="apic-glossary"/>
</glossentry>
<glossentry>
<glossterm>APM</glossterm>
<glosssee otherterm="apm-glossary"/>
</glossentry>
<glossentry>
<glossterm>APOP</glossterm>
<glosssee otherterm="apop-glossary"/>
</glossentry>
<glossentry>
<glossterm>ASL</glossterm>
<glosssee otherterm="asl-glossary"/>
</glossentry>
<glossentry>
<glossterm>ATA</glossterm>
<glosssee otherterm="ata-glossary"/>
</glossentry>
<glossentry>
<glossterm>ATM</glossterm>
<glosssee otherterm="atm-glossary"/>
</glossentry>
<glossentry xml:id="aml-glossary">
<glossterm><acronym>ACPI</acronym> Machine Language</glossterm>
<acronym>AML</acronym>
<glossdef>
<para>Pseudocode, interpreted by a virtual machine within an
<acronym>ACPI</acronym>-compliant operating system, providing a
layer between the underlying hardware and the documented
interface presented to the <acronym>OS</acronym>.</para>
</glossdef>
</glossentry>
<glossentry xml:id="asl-glossary">
<glossterm><acronym>ACPI</acronym> Source Language</glossterm>
<acronym>ASL</acronym>
<glossdef>
<para>The programming language <acronym>AML</acronym> is written in.</para>
</glossdef>
</glossentry>
<glossentry xml:id="acl-glossary">
<glossterm>Access Control List</glossterm>
<acronym>ACL</acronym>
<glossdef>
<para>A list of permissions attached to an object, usually either a
file or a network device.</para>
</glossdef>
</glossentry>
<glossentry xml:id="acpi-glossary">
<glossterm>Advanced Configuration and Power Interface</glossterm>
<acronym>ACPI</acronym>
<glossdef>
<para>A specification which provides an abstraction of the
interface the hardware presents to the operating system, so
that the operating system should need to know nothing about
the underlying hardware to make the most of it. <acronym>ACPI</acronym>
evolves and supersedes the functionality provided previously by
<acronym>APM</acronym>, <acronym>PNPBIOS</acronym> and other technologies, and
provides facilities for controlling power consumption, machine
suspension, device enabling and disabling, etc.</para>
</glossdef>
</glossentry>
<glossentry xml:id="api-glossary">
<glossterm>Application Programming Interface</glossterm>
<acronym>API</acronym>
<glossdef>
<para>A set of procedures, protocols and tools that specify the
canonical interaction of one or more program parts; how, when
and why they do work together, and what data they share or
operate on.</para>
</glossdef>
</glossentry>
<glossentry xml:id="apm-glossary">
<glossterm>Advanced Power Management</glossterm>
<acronym>APM</acronym>
<glossdef>
<para>An <acronym>API</acronym> enabling the operating system to work
in conjunction with the <acronym>BIOS</acronym> in order to achieve
power management. <acronym>APM</acronym> has been superseded by
the much more generic and powerful <acronym>ACPI</acronym>
specification for most applications.</para>
</glossdef>
</glossentry>
<glossentry xml:id="apic-glossary">
<glossterm>Advanced Programmable Interrupt Controller</glossterm>
<acronym>APIC</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="ata-glossary">
<glossterm>Advanced Technology Attachment</glossterm>
<acronym>ATA</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="atm-glossary">
<glossterm>Asynchronous Transfer Mode</glossterm>
<acronym>ATM</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="apop-glossary">
<glossterm>Authenticated Post Office Protocol</glossterm>
<acronym>APOP</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="amd-glossary">
<glossterm>Automatic Mount Daemon</glossterm>
<acronym>AMD</acronym>
<glossdef>
<para>A daemon that automatically mounts a filesystem when a file
or directory within that filesystem is accessed.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>B</title>
<glossentry>
<glossterm>BAR</glossterm>
<glosssee otherterm="bar-glossary"/>
</glossentry>
<glossentry>
<glossterm>BIND</glossterm>
<glosssee otherterm="bind-glossary"/>
</glossentry>
<glossentry>
<glossterm>BIOS</glossterm>
<glosssee otherterm="bios-glossary"/>
</glossentry>
<glossentry>
<glossterm>BSD</glossterm>
<glosssee otherterm="bsd-glossary"/>
</glossentry>
<glossentry xml:id="bar-glossary">
<glossterm>Base Address Register</glossterm>
<acronym>BAR</acronym>
<glossdef>
<para>The registers that determine which address range a <acronym>PCI</acronym> device
will respond to.</para>
</glossdef>
</glossentry>
<glossentry xml:id="bios-glossary">
<glossterm>Basic Input/Output System</glossterm>
<acronym>BIOS</acronym>
<glossdef>
<para>The definition of <acronym>BIOS</acronym> depends a bit on
the context. Some people refer to it as the <acronym>ROM</acronym>
chip with a basic set of routines to provide an interface between
software and hardware. Others refer to it as the set of routines
contained in the chip that help in bootstrapping the system. Some
might also refer to it as the screen used to configure the
bootstrapping process. The <acronym>BIOS</acronym> is PC-specific
but other systems have something similar.</para>
</glossdef>
</glossentry>
<glossentry xml:id="bind-glossary">
<glossterm>Berkeley Internet Name Domain</glossterm>
<acronym>BIND</acronym>
<glossdef>
<para>An implementation of the <acronym>DNS</acronym> protocols.</para>
</glossdef>
</glossentry>
<glossentry xml:id="bsd-glossary">
<glossterm>Berkeley Software Distribution</glossterm>
<acronym>BSD</acronym>
<glossdef>
<para>This is the name that the Computer Systems Research Group
(CSRG) at <link xlink:href="http://www.berkeley.edu">The University
of California at Berkeley</link>
gave to their improvements and modifications to
AT&T's 32V &unix;.
&os; is a descendant of the CSRG work.</para>
</glossdef>
</glossentry>
<glossentry xml:id="bikeshed-glossary">
<glossterm>Bikeshed Building</glossterm>
<glossdef subject="FreeBSD">
<para>A phenomenon whereby many people will give an opinion on
an uncomplicated topic, whilst a complex topic receives little
or no discussion. See the
<link xlink:href="&url.books.faq;/misc.html#BIKESHED-PAINTING">FAQ</link> for
the origin of the term.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>C</title>
<glossentry>
<glossterm>CD</glossterm>
<glosssee otherterm="cd-glossary"/>
</glossentry>
<glossentry>
<glossterm>CHAP</glossterm>
<glosssee otherterm="chap-glossary"/>
</glossentry>
<glossentry>
<glossterm>CLIP</glossterm>
<glosssee otherterm="clip-glossary"/>
</glossentry>
<glossentry>
<glossterm>COFF</glossterm>
<glosssee otherterm="coff-glossary"/>
</glossentry>
<glossentry>
<glossterm>CPU</glossterm>
<glosssee otherterm="cpu-glossary"/>
</glossentry>
<glossentry>
<glossterm>CTS</glossterm>
<glosssee otherterm="cts-glossary"/>
</glossentry>
<glossentry xml:id="cd-glossary">
<glossterm>Carrier Detect</glossterm>
<acronym>CD</acronym>
<glossdef>
<para>An <acronym>RS232C</acronym> signal indicating that a carrier
has been detected.</para>
</glossdef>
</glossentry>
<glossentry xml:id="cpu-glossary">
<glossterm>Central Processing Unit</glossterm>
<acronym>CPU</acronym>
<glossdef>
<para>Also known as the processor. This is the brain of the
computer where all calculations take place. There are a number of
different architectures with different instruction sets. Among
the more well-known are the Intel-x86 and derivatives, Arm, and
PowerPC.</para>
</glossdef>
</glossentry>
<glossentry xml:id="chap-glossary">
<glossterm>Challenge Handshake Authentication Protocol</glossterm>
<acronym>CHAP</acronym>
<glossdef>
<para>A method of authenticating a user, based on a secret shared
between client and server.</para>
</glossdef>
</glossentry>
<glossentry xml:id="clip-glossary">
<glossterm>Classical <acronym>IP</acronym> over <acronym>ATM</acronym></glossterm>
<acronym>CLIP</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="cts-glossary">
<glossterm>Clear To Send</glossterm>
<acronym>CTS</acronym>
<glossdef>
<para>An <acronym>RS232C</acronym> signal giving the remote system
permission to send data.</para>
<glossseealso otherterm="rts-glossary"/>
</glossdef>
</glossentry>
<glossentry xml:id="coff-glossary">
<glossterm>Common Object File Format</glossterm>
<acronym>COFF</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>D</title>
<glossentry>
<glossterm>DAC</glossterm>
<glosssee otherterm="dac-glossary"/>
</glossentry>
<glossentry>
<glossterm>DDB</glossterm>
<glosssee otherterm="ddb-glossary"/>
</glossentry>
<glossentry>
<glossterm>DES</glossterm>
<glosssee otherterm="des-glossary"/>
</glossentry>
<glossentry>
<glossterm>DHCP</glossterm>
<glosssee otherterm="dhcp-glossary"/>
</glossentry>
<glossentry>
<glossterm>DNS</glossterm>
<glosssee otherterm="dns-glossary"/>
</glossentry>
<glossentry>
<glossterm>DSDT</glossterm>
<glosssee otherterm="dsdt-glossary"/>
</glossentry>
<glossentry>
<glossterm>DSR</glossterm>
<glosssee otherterm="dsr-glossary"/>
</glossentry>
<glossentry>
<glossterm>DTR</glossterm>
<glosssee otherterm="dtr-glossary"/>
</glossentry>
<glossentry>
<glossterm>DVMRP</glossterm>
<glosssee otherterm="dvmrp-glossary"/>
</glossentry>
<glossentry xml:id="dac-glossary">
<glossterm>Discretionary Access Control</glossterm>
<acronym>DAC</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="des-glossary">
<glossterm>Data Encryption Standard</glossterm>
<acronym>DES</acronym>
<glossdef>
<para>A method of encrypting information, traditionally used as the
method of encryption for &unix; passwords and the &man.crypt.3;
function.</para>
</glossdef>
</glossentry>
<glossentry xml:id="dsr-glossary">
<glossterm>Data Set Ready</glossterm>
<acronym>DSR</acronym>
<glossdef>
<para>An <acronym>RS232C</acronym> signal sent from the modem to the
computer or terminal indicating a readiness to send and receive
data.</para>
<glossseealso otherterm="dtr-glossary"/>
</glossdef>
</glossentry>
<glossentry xml:id="dtr-glossary">
<glossterm>Data Terminal Ready</glossterm>
<acronym>DTR</acronym>
<glossdef>
<para>An <acronym>RS232C</acronym> signal sent from the computer or
terminal to the modem indicating a readiness to send and receive
data.</para>
</glossdef>
</glossentry>
<glossentry xml:id="ddb-glossary">
<glossterm>Debugger</glossterm>
<acronym>DDB</acronym>
<glossdef>
<para>An interactive in-kernel facility for examining the status of
a system, often used after a system has crashed to establish the
events surrounding the failure.</para>
</glossdef>
</glossentry>
<glossentry xml:id="dsdt-glossary">
<glossterm>Differentiated System Description Table</glossterm>
<acronym>DSDT</acronym>
<glossdef>
<para>An <acronym>ACPI</acronym> table, supplying basic configuration
information about the base system.</para>
</glossdef>
</glossentry>
<glossentry xml:id="dvmrp-glossary">
<glossterm>Distance-Vector Multicast Routing Protocol</glossterm>
<acronym>DVMRP</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="dns-glossary">
<glossterm>Domain Name System</glossterm>
<acronym>DNS</acronym>
<glossdef>
<para>The system that converts humanly readable hostnames (i.e.,
mail.example.net) to Internet addresses and vice versa.</para>
</glossdef>
</glossentry>
<glossentry xml:id="dhcp-glossary">
<glossterm>Dynamic Host Configuration Protocol</glossterm>
<acronym>DHCP</acronym>
<glossdef>
<para>A protocol that dynamically assigns IP addresses to a computer
(host) when it requests one from the server. The address assignment
is called a <quote>lease</quote>.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>E</title>
<glossentry>
<glossterm>ECOFF</glossterm>
<glosssee otherterm="ecoff-glossary"/>
</glossentry>
<glossentry>
<glossterm>ELF</glossterm>
<glosssee otherterm="elf-glossary"/>
</glossentry>
<glossentry>
<glossterm>ESP</glossterm>
<glosssee otherterm="esp-glossary"/>
</glossentry>
<glossentry xml:id="esp-glossary">
<glossterm>Encapsulated Security Payload</glossterm>
<acronym>ESP</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="elf-glossary">
<glossterm>Executable and Linking Format</glossterm>
<acronym>ELF</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="ecoff-glossary">
<glossterm>Extended <acronym>COFF</acronym></glossterm>
<acronym>ECOFF</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>F</title>
<glossentry>
<glossterm>FADT</glossterm>
<glosssee otherterm="fadt-glossary"/>
</glossentry>
<glossentry>
<glossterm>FAT</glossterm>
<glosssee otherterm="fat-glossary"/>
</glossentry>
<glossentry>
<glossterm>FAT16</glossterm>
<glosssee otherterm="fat16-glossary"/>
</glossentry>
<glossentry>
<glossterm>FTP</glossterm>
<glosssee otherterm="ftp-glossary"/>
</glossentry>
<glossentry xml:id="fat-glossary">
<glossterm>File Allocation Table</glossterm>
<acronym>FAT</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="fat16-glossary">
<glossterm>File Allocation Table (16-bit)</glossterm>
<acronym>FAT16</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="ftp-glossary">
<glossterm>File Transfer Protocol</glossterm>
<acronym>FTP</acronym>
<glossdef>
<para>A member of the family of high-level protocols implemented
on top of <acronym>TCP</acronym> which can be used to transfer
files over a <acronym>TCP/IP</acronym> network.</para>
</glossdef>
</glossentry>
<glossentry xml:id="fadt-glossary">
<glossterm>Fixed <acronym>ACPI</acronym> Description Table</glossterm>
<acronym>FADT</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>G</title>
<glossentry>
<glossterm>GUI</glossterm>
<glosssee otherterm="gui-glossary"/>
</glossentry>
<glossentry xml:id="giant-glossary">
<glossterm>Giant</glossterm>
<glossdef subject="FreeBSD">
<para>The name of a mutual exclusion mechanism
(a <literal>sleep mutex</literal>) that protects a large
set of kernel resources. Although a simple locking mechanism
was adequate in the days where a machine might have only
a few dozen processes, one networking card, and certainly
only one processor, in current times it is an unacceptable
performance bottleneck. &os; developers are actively working
to replace it with locks that protect individual resources,
which will allow a much greater degree of parallelism for
both single-processor and multi-processor machines.</para>
</glossdef>
</glossentry>
<glossentry xml:id="gui-glossary">
<glossterm>Graphical User Interface</glossterm>
<acronym>GUI</acronym>
<glossdef>
<para>A system where the user and computer interact with
graphics.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>H</title>
<glossentry>
<glossterm>HTML</glossterm>
<glosssee otherterm="html-glossary"/>
</glossentry>
<glossentry>
<glossterm>HUP</glossterm>
<glosssee otherterm="hup-glossary"/>
</glossentry>
<glossentry xml:id="hup-glossary">
<glossterm>HangUp</glossterm>
<acronym>HUP</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="html-glossary">
<glossterm>HyperText Markup Language</glossterm>
<acronym>HTML</acronym>
<glossdef>
<para>The markup language used to create web pages.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>I</title>
<glossentry>
<glossterm>I/O</glossterm>
<glosssee otherterm="io-glossary"/>
</glossentry>
<glossentry>
<glossterm>IASL</glossterm>
<glosssee otherterm="iasl-glossary"/>
</glossentry>
<glossentry>
<glossterm>IMAP</glossterm>
<glosssee otherterm="imap-glossary"/>
</glossentry>
<glossentry>
<glossterm>IP</glossterm>
<glosssee otherterm="ip-glossary"/>
</glossentry>
<glossentry>
<glossterm>IPFW</glossterm>
<glosssee otherterm="ipfw-glossary"/>
</glossentry>
<glossentry>
<glossterm>IPP</glossterm>
<glosssee otherterm="ipp-glossary"/>
</glossentry>
<glossentry>
<glossterm>IPv4</glossterm>
<glosssee otherterm="ipv4-glossary"/>
</glossentry>
<glossentry>
<glossterm>IPv6</glossterm>
<glosssee otherterm="ipv6-glossary"/>
</glossentry>
<glossentry>
<glossterm>ISP</glossterm>
<glosssee otherterm="isp-glossary"/>
</glossentry>
<glossentry xml:id="ipfw-glossary">
<glossterm><acronym>IP</acronym> Firewall</glossterm>
<acronym>IPFW</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="ipv4-glossary">
<glossterm><acronym>IP</acronym> Version 4</glossterm>
<acronym>IPv4</acronym>
<glossdef>
<para>The <acronym>IP</acronym> protocol version 4, which uses 32 bits
for addressing. This version is still the most widely used, but it
is slowly being replaced with <acronym>IPv6</acronym>.</para>
<glossseealso otherterm="ipv6-glossary"/>
</glossdef>
</glossentry>
<glossentry xml:id="ipv6-glossary">
<glossterm><acronym>IP</acronym> Version 6</glossterm>
<acronym>IPv6</acronym>
<glossdef>
<para>The new <acronym>IP</acronym> protocol. Invented because the
address space in <acronym>IPv4</acronym> is running out. Uses 128
bits for addressing.</para>
</glossdef>
</glossentry>
<glossentry xml:id="io-glossary">
<glossterm>Input/Output</glossterm>
<acronym>I/O</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="iasl-glossary">
<glossterm>Intel’s <acronym>ASL</acronym> compiler</glossterm>
<acronym>IASL</acronym>
<glossdef>
<para>Intel’s compiler for converting <acronym>ASL</acronym> into
<acronym>AML</acronym>.</para>
</glossdef>
</glossentry>
<glossentry xml:id="imap-glossary">
<glossterm>Internet Message Access Protocol</glossterm>
<acronym>IMAP</acronym>
<glossdef>
<para>A protocol for accessing email messages on a mail server,
characterised by the messages usually being kept on the server as
opposed to being downloaded to the mail reader client.</para>
<glossseealso otherterm="pop3-glossary"/>
</glossdef>
</glossentry>
<glossentry xml:id="ipp-glossary">
<glossterm>Internet Printing Protocol</glossterm>
<acronym>IPP</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="ip-glossary">
<glossterm>Internet Protocol</glossterm>
<acronym>IP</acronym>
<glossdef>
<para>The packet transmitting protocol that is the basic protocol on
the Internet. Originally developed at the U.S. Department of
Defense and an extremely important part of the <acronym>TCP/IP
</acronym> stack. Without the Internet Protocol, the Internet
would not have become what it is today. For more information, see
<link xlink:href="ftp://ftp.rfc-editor.org/in-notes/rfc791.txt">
RFC 791</link>.</para>
</glossdef>
</glossentry>
<glossentry xml:id="isp-glossary">
<glossterm>Internet Service Provider</glossterm>
<acronym>ISP</acronym>
<glossdef>
<para>A company that provides access to the Internet.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>K</title>
<glossentry xml:id="kame-glossary">
<glossterm>KAME</glossterm>
<glossdef>
<para>Japanese for <quote>turtle</quote>, the term KAME is used
in computing circles to refer to the <link xlink:href="http://www.kame.net/">KAME Project</link>, who work on
an implementation of <acronym>IPv6</acronym>.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>KDC</glossterm>
<glosssee otherterm="kdc-glossary"/>
</glossentry>
<glossentry>
<glossterm>KLD</glossterm>
<glosssee otherterm="kld-glossary"/>
</glossentry>
<glossentry>
<glossterm>KSE</glossterm>
<glosssee otherterm="kse-glossary"/>
</glossentry>
<glossentry>
<glossterm>KVA</glossterm>
<glosssee otherterm="kva-glossary"/>
</glossentry>
<glossentry>
<glossterm>Kbps</glossterm>
<glosssee otherterm="kbps-glossary"/>
</glossentry>
<glossentry xml:id="kld-glossary">
<glossterm>Kernel &man.ld.1;</glossterm>
<acronym>KLD</acronym>
<glossdef>
<para>A method of dynamically loading functionality into a &os; kernel
without rebooting the system.</para>
</glossdef>
</glossentry>
<glossentry xml:id="kse-glossary">
<glossterm>Kernel Scheduler Entities</glossterm>
<acronym>KSE</acronym>
<glossdef>
<para>A kernel-supported threading system. See the <link xlink:href="http://www.FreeBSD.org/kse">project home page</link>
for further details.</para>
</glossdef>
</glossentry>
<glossentry xml:id="kva-glossary">
<glossterm>Kernel Virtual Address</glossterm>
<acronym>KVA</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="kdc-glossary">
<glossterm>Key Distribution Center</glossterm>
<acronym>KDC</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="kbps-glossary">
<glossterm>Kilo Bits Per Second</glossterm>
<acronym>Kbps</acronym>
<glossdef>
<para>Used to measure bandwidth (how much data can pass a given
point at a specified amount of time). Alternates to the Kilo
prefix include Mega, Giga, Tera, and so forth.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>L</title>
<glossentry>
<glossterm>LAN</glossterm>
<glosssee otherterm="lan-glossary"/>
</glossentry>
<glossentry>
<glossterm>LOR</glossterm>
<glosssee otherterm="lor-glossary"/>
</glossentry>
<glossentry>
<glossterm>LPD</glossterm>
<glosssee otherterm="lpd-glossary"/>
</glossentry>
<glossentry xml:id="lpd-glossary">
<glossterm>Line Printer Daemon</glossterm>
<acronym>LPD</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="lan-glossary">
<glossterm>Local Area Network</glossterm>
<acronym>LAN</acronym>
<glossdef>
<para>A network used on a local area, e.g. office, home, or so forth.
</para>
</glossdef>
</glossentry>
<glossentry xml:id="lor-glossary">
<glossterm>Lock Order Reversal</glossterm>
<acronym>LOR</acronym>
<glossdef>
<para>The &os; kernel uses a number of resource locks to
arbitrate contention for those resources. A run-time
lock diagnostic system found in &os.current; kernels
(but removed for releases), called &man.witness.4;,
detects the potential for deadlocks due to locking errors.
(&man.witness.4; is actually slightly conservative, so
it is possible to get false positives.) A true positive
report indicates that <quote>if you were unlucky, a deadlock would
have happened here</quote>.</para>
<para>True positive LORs tend to get fixed quickly, so
check &a.current.url; and the
<link xlink:href="http://sources.zabbadoz.net/freebsd/lor.html">
LORs Seen</link> page before posting to the mailing lists.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>M</title>
<glossentry>
<glossterm>MAC</glossterm>
<glosssee otherterm="mac-glossary"/>
</glossentry>
<glossentry>
<glossterm>MADT</glossterm>
<glosssee otherterm="madt-glossary"/>
</glossentry>
<glossentry>
<glossterm>MFC</glossterm>
<glosssee otherterm="mfc-glossary"/>
</glossentry>
<glossentry>
<glossterm>MFH</glossterm>
<glosssee otherterm="mfh-glossary"/>
</glossentry>
<glossentry>
<glossterm>MFS</glossterm>
<glosssee otherterm="mfs-glossary"/>
</glossentry>
<glossentry>
<glossterm>MFV</glossterm>
<glosssee otherterm="mfv-glossary"/>
</glossentry>
<glossentry>
<glossterm>MIT</glossterm>
<glosssee otherterm="mit-glossary"/>
</glossentry>
<glossentry>
<glossterm>MLS</glossterm>
<glosssee otherterm="mls-glossary"/>
</glossentry>
<glossentry>
<glossterm>MOTD</glossterm>
<glosssee otherterm="motd-glossary"/>
</glossentry>
<glossentry>
<glossterm>MTA</glossterm>
<glosssee otherterm="mta-glossary"/>
</glossentry>
<glossentry>
<glossterm>MUA</glossterm>
<glosssee otherterm="mua-glossary"/>
</glossentry>
<glossentry xml:id="mta-glossary">
<glossterm>Mail Transfer Agent</glossterm>
<acronym>MTA</acronym>
<glossdef>
<para>An application used to transfer email. An
<acronym>MTA</acronym> has traditionally been part of the BSD
base system. Today Sendmail is included in the base system, but
there are many other <acronym>MTA</acronym>s, such as postfix,
qmail and Exim.</para>
</glossdef>
</glossentry>
<glossentry xml:id="mua-glossary">
<glossterm>Mail User Agent</glossterm>
<acronym>MUA</acronym>
<glossdef>
<para>An application used by users to display and write email.</para>
</glossdef>
</glossentry>
<glossentry xml:id="mac-glossary">
<glossterm>Mandatory Access Control</glossterm>
<acronym>MAC</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="mit-glossary">
<glossterm>Massachusetts Institute of Technology</glossterm>
<acronym>MIT</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="mfc-glossary">
<glossterm>Merge From Current</glossterm>
<acronym>MFC</acronym>
<glossdef subject="FreeBSD">
<para>To merge functionality or a patch from the -CURRENT
branch to another, most often -STABLE.</para>
</glossdef>
</glossentry>
<glossentry xml:id="mfh-glossary">
<glossterm>Merge From Head</glossterm>
<acronym>MFH</acronym>
<glossdef subject="FreeBSD">
<para>To merge functionality or a patch from a repository HEAD
to an earlier branch.</para>
</glossdef>
</glossentry>
<glossentry xml:id="mfs-glossary">
<glossterm>Merge From Stable</glossterm>
<acronym>MFS</acronym>
<glossdef subject="FreeBSD">
<para>In the normal course of FreeBSD development, a change will
be committed to the -CURRENT branch for testing before being
merged to -STABLE. On rare occasions, a change will go into
-STABLE first and then be merged to -CURRENT.</para>
<para>This term is also used when a patch is merged from -STABLE
to a security branch.</para>
<glossseealso otherterm="mfc-glossary"/>
</glossdef>
</glossentry>
<glossentry xml:id="mfv-glossary">
<glossterm>Merge From Vendor</glossterm>
<acronym>MFV</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="motd-glossary">
<glossterm>Message Of The Day</glossterm>
<acronym>MOTD</acronym>
<glossdef>
<para>A message, usually shown on login, often used to
distribute information to users of the system.</para>
</glossdef>
</glossentry>
<glossentry xml:id="mls-glossary">
<glossterm>Multi-Level Security</glossterm>
<acronym>MLS</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="madt-glossary">
<glossterm>Multiple <acronym>APIC</acronym> Description Table</glossterm>
<acronym>MADT</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>N</title>
<glossentry>
<glossterm>NAT</glossterm>
<glosssee otherterm="nat-glossary"/>
</glossentry>
<glossentry>
<glossterm>NDISulator</glossterm>
<glosssee otherterm="projectevil-glossary"/>
</glossentry>
<glossentry>
<glossterm>NFS</glossterm>
<glosssee otherterm="nfs-glossary"/>
</glossentry>
<glossentry>
<glossterm>NTFS</glossterm>
<glosssee otherterm="ntfs-glossary"/>
</glossentry>
<glossentry>
<glossterm>NTP</glossterm>
<glosssee otherterm="ntp-glossary"/>
</glossentry>
<glossentry xml:id="nat-glossary">
<glossterm>Network Address Translation</glossterm>
<acronym>NAT</acronym>
<glossdef>
<para>A technique where <acronym>IP</acronym> packets are rewritten
on the way through a gateway, enabling many machines behind the
gateway to effectively share a single <acronym>IP</acronym> address.</para>
</glossdef>
</glossentry>
<glossentry xml:id="nfs-glossary">
<glossterm>Network File System</glossterm>
<acronym>NFS</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="ntfs-glossary">
<glossterm>New Technology File System</glossterm>
<acronym>NTFS</acronym>
<glossdef>
<para>A filesystem developed by Microsoft and available in its
<quote>New Technology</quote> operating systems, such as
&windows2k;, &windowsnt; and &windowsxp;.</para>
</glossdef>
</glossentry>
<glossentry xml:id="ntp-glossary">
<glossterm>Network Time Protocol</glossterm>
<acronym>NTP</acronym>
<glossdef>
<para>A means of synchronizing clocks over a network.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>O</title>
<glossentry>
<glossterm>OBE</glossterm>
<glosssee otherterm="obe-glossary"/>
</glossentry>
<glossentry>
<glossterm>ODMR</glossterm>
<glosssee otherterm="odmr-glossary"/>
</glossentry>
<glossentry>
<glossterm>OS</glossterm>
<glosssee otherterm="os-glossary"/>
</glossentry>
<glossentry xml:id="odmr-glossary">
<glossterm>On-Demand Mail Relay</glossterm>
<acronym>ODMR</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="os-glossary">
<glossterm>Operating System</glossterm>
<acronym>OS</acronym>
<glossdef>
<para>A set of programs, libraries and tools that provide access to
the hardware resources of a computer. Operating systems range
today from simplistic designs that support only one program
running at a time, accessing only one device to fully
multi-user, multi-tasking and multi-process systems that can
serve thousands of users simultaneously, each of them running
dozens of different applications.</para>
</glossdef>
</glossentry>
<glossentry xml:id="obe-glossary">
<glossterm>Overtaken By Events</glossterm>
<acronym>OBE</acronym>
<glossdef>
<para>Indicates a suggested change (such as a Problem Report
or a feature request) which is no longer relevant or
applicable due to such things as later changes to &os;,
changes in networking standards, the affected hardware
having since become obsolete, and so forth.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>P</title>
<glossentry>
<glossterm>PAE</glossterm>
<glosssee otherterm="pae-glossary"/>
</glossentry>
<glossentry>
<glossterm>PAM</glossterm>
<glosssee otherterm="pam-glossary"/>
</glossentry>
<glossentry>
<glossterm>PAP</glossterm>
<glosssee otherterm="pap-glossary"/>
</glossentry>
<glossentry>
<glossterm>PC</glossterm>
<glosssee otherterm="pc-glossary"/>
</glossentry>
<glossentry>
<glossterm>PCNSFD</glossterm>
<glosssee otherterm="pcnfsd-glossary"/>
</glossentry>
<glossentry>
<glossterm>PDF</glossterm>
<glosssee otherterm="pdf-glossary"/>
</glossentry>
<glossentry>
<glossterm>PID</glossterm>
<glosssee otherterm="pid-glossary"/>
</glossentry>
<glossentry>
<glossterm>POLA</glossterm>
<glosssee otherterm="pola-glossary"/>
</glossentry>
<glossentry>
<glossterm>POP</glossterm>
<glosssee otherterm="pop-glossary"/>
</glossentry>
<glossentry>
<glossterm>POP3</glossterm>
<glosssee otherterm="pop3-glossary"/>
</glossentry>
<glossentry>
<glossterm>PPD</glossterm>
<glosssee otherterm="ppd-glossary"/>
</glossentry>
<glossentry>
<glossterm>PPP</glossterm>
<glosssee otherterm="ppp-glossary"/>
</glossentry>
<glossentry>
<glossterm>PPPoA</glossterm>
<glosssee otherterm="pppoa-glossary"/>
</glossentry>
<glossentry>
<glossterm>PPPoE</glossterm>
<glosssee otherterm="pppoe-glossary"/>
</glossentry>
<glossentry xml:id="pppoa-glossary">
<glossterm><acronym>PPP</acronym> over <acronym>ATM</acronym></glossterm>
<acronym>PPPoA</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="pppoe-glossary">
<glossterm><acronym>PPP</acronym> over <acronym>Ethernet</acronym></glossterm>
<acronym>PPPoE</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry>
<glossterm>PR</glossterm>
<glosssee otherterm="pr-glossary"/>
</glossentry>
<glossentry>
<glossterm>PXE</glossterm>
<glosssee otherterm="pxe-glossary"/>
</glossentry>
<glossentry xml:id="pap-glossary">
<glossterm>Password Authentication Protocol</glossterm>
<acronym>PAP</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="pc-glossary">
<glossterm>Personal Computer</glossterm>
<acronym>PC</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="pcnfsd-glossary">
<glossterm>Personal Computer Network File System Daemon</glossterm>
<acronym>PCNFSD</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="pae-glossary">
<glossterm>Physical Address Extensions</glossterm>
<acronym>PAE</acronym>
<glossdef>
<para>A method of enabling access to up to 64 GB of <acronym>RAM</acronym> on
systems which only physically have a 32-bit wide address space
(and would therefore be limited to 4 GB without PAE).</para>
</glossdef>
</glossentry>
<glossentry xml:id="pam-glossary">
<glossterm>Pluggable Authentication Modules</glossterm>
<acronym>PAM</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="ppp-glossary">
<glossterm>Point-to-Point Protocol</glossterm>
<acronym>PPP</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="pointyhat">
<glossterm>Pointy Hat</glossterm>
<glossdef subject="FreeBSD">
<para>A mythical piece of headgear, much like a
<literal>dunce cap</literal>, awarded to any &os;
committer who breaks the build, makes revision numbers
go backwards, or creates any other kind of havoc in
the source base. Any committer worth his or her salt
will soon accumulate a large collection. The usage is
(almost always?) humorous.</para>
</glossdef>
</glossentry>
<glossentry xml:id="pdf-glossary">
<glossterm>Portable Document Format</glossterm>
<acronym>PDF</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="pop-glossary">
<glossterm>Post Office Protocol</glossterm>
<acronym>POP</acronym>
<glossdef>
<para/>
<glossseealso otherterm="pop3-glossary"/>
</glossdef>
</glossentry>
<glossentry xml:id="pop3-glossary">
<glossterm>Post Office Protocol Version 3</glossterm>
<acronym>POP3</acronym>
<glossdef>
<para>A protocol for accessing email messages on a mail server,
characterised by the messages usually being downloaded from the
server to the client, as opposed to remaining on the server.</para>
<glossseealso otherterm="imap-glossary"/>
</glossdef>
</glossentry>
<glossentry xml:id="ppd-glossary">
<glossterm>PostScript Printer Description</glossterm>
<acronym>PPD</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="pxe-glossary">
<glossterm>Preboot eXecution Environment</glossterm>
<acronym>PXE</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="pola-glossary">
<glossterm>Principle Of Least Astonishment</glossterm>
<acronym>POLA</acronym>
<glossdef>
<para>As &os; evolves, changes visible to the user should be
kept as unsurprising as possible. For example, arbitrarily
rearranging system startup variables in
<filename>/etc/defaults/rc.conf</filename> violates
<acronym>POLA</acronym>. Developers consider
<acronym>POLA</acronym> when contemplating user-visible
system changes.</para>
</glossdef>
</glossentry>
<glossentry xml:id="pr-glossary">
<glossterm>Problem Report</glossterm>
<acronym>PR</acronym>
<glossdef>
<para>A description of some kind of problem that has been
found in either the &os; source or documentation. See
<link xlink:href="&url.articles.problem-reports;/index.html">
Writing &os; Problem Reports</link>.</para>
</glossdef>
</glossentry>
<glossentry xml:id="pid-glossary">
<glossterm>Process ID</glossterm>
<acronym>PID</acronym>
<glossdef>
<para>A number, unique to a particular process on a system,
which identifies it and allows actions to be taken against it.</para>
</glossdef>
</glossentry>
<glossentry xml:id="projectevil-glossary">
<glossterm>Project Evil</glossterm>
<glossdef subject="FreeBSD">
<para>The working title for the <acronym>NDISulator</acronym>,
written by Bill Paul, who named it referring to how awful
it is (from a philosophical standpoint) to need to have
something like this in the first place. The
<acronym>NDISulator</acronym> is a special compatibility
module to allow Microsoft Windows™ NDIS miniport
network drivers to be used with &os;/i386. This is usually
the only way to use cards where the driver is closed-source.
See <filename>src/sys/compat/ndis/subr_ndis.c</filename>.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>R</title>
<glossentry>
<glossterm>RA</glossterm>
<glosssee otherterm="ra-glossary"/>
</glossentry>
<glossentry>
<glossterm>RAID</glossterm>
<glosssee otherterm="raid-glossary"/>
</glossentry>
<glossentry>
<glossterm>RAM</glossterm>
<glosssee otherterm="ram-glossary"/>
</glossentry>
<glossentry>
<glossterm>RD</glossterm>
<glosssee otherterm="rd-glossary"/>
</glossentry>
<glossentry>
<glossterm>RFC</glossterm>
<glosssee otherterm="rfc-glossary"/>
</glossentry>
<glossentry>
<glossterm>RISC</glossterm>
<glosssee otherterm="risc-glossary"/>
</glossentry>
<glossentry>
<glossterm>RPC</glossterm>
<glosssee otherterm="rpc-glossary"/>
</glossentry>
<glossentry>
<glossterm>RS232C</glossterm>
<glosssee otherterm="rs232c-glossary"/>
</glossentry>
<glossentry>
<glossterm>RTS</glossterm>
<glosssee otherterm="rts-glossary"/>
</glossentry>
<glossentry xml:id="ram-glossary">
<glossterm>Random Access Memory</glossterm>
<acronym>RAM</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="rcs-glossary">
<glossterm>Revision Control System</glossterm>
<acronym>RCS</acronym>
<glossdef>
<para>The <emphasis>Revision Control System</emphasis>
(<acronym>RCS</acronym>) is one of the oldest software suites
that implement <quote>revision control</quote> for plain
files. It allows the storage, retrieval, archival, logging,
identification and merging of multiple revisions for each
file. RCS consists of many small tools that work together.
It lacks some of the features found in more modern revision
control systems, like Git, but it is very simple
to install, configure, and start using for a small set of
files.</para>
<glossseealso otherterm="svn-glossary"/>
</glossdef>
</glossentry>
<glossentry xml:id="rd-glossary">
<glossterm>Received Data</glossterm>
<acronym>RD</acronym>
<glossdef>
<para>An <acronym>RS232C</acronym> pin or wire that data is
received on.</para>
<glossseealso otherterm="td-glossary"/>
</glossdef>
</glossentry>
<glossentry xml:id="rs232c-glossary">
<glossterm>Recommended Standard 232C</glossterm>
<acronym>RS232C</acronym>
<glossdef>
<para>A standard for communications between serial devices.</para>
</glossdef>
</glossentry>
<glossentry xml:id="risc-glossary">
<glossterm>Reduced Instruction Set Computer</glossterm>
<acronym>RISC</acronym>
<glossdef>
<para>An approach to processor design where the operations the hardware
can perform are simplified but made as general purpose as possible.
This can lead to lower power consumption, fewer transistors and in
some cases, better performance and increased code density. Examples
of RISC processors include the Alpha, &sparc;, &arm; and
&powerpc;.</para>
</glossdef>
</glossentry>
<glossentry xml:id="raid-glossary">
<glossterm>Redundant Array of Inexpensive Disks</glossterm>
<acronym>RAID</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="rpc-glossary">
<glossterm>Remote Procedure Call</glossterm>
<acronym>RPC</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="rfc-glossary">
<glossterm>Request For Comments</glossterm>
<acronym>RFC</acronym>
<glossdef>
<para>A set of documents defining Internet standards, protocols, and
so forth. See
<link xlink:href="http://www.rfc-editor.org/">www.rfc-editor.org</link>.
</para>
<para>Also used as a general term when someone has a suggested change
and wants feedback.</para>
</glossdef>
</glossentry>
<glossentry xml:id="rts-glossary">
<glossterm>Request To Send</glossterm>
<acronym>RTS</acronym>
<glossdef>
<para>An <acronym>RS232C</acronym> signal requesting that the remote
system commences transmission of data.</para>
<glossseealso otherterm="cts-glossary"/>
</glossdef>
</glossentry>
<glossentry xml:id="ra-glossary">
<glossterm>Router Advertisement</glossterm>
<acronym>RA</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>S</title>
<glossentry>
<glossterm>SCI</glossterm>
<glosssee otherterm="sci-glossary"/>
</glossentry>
<glossentry>
<glossterm>SCSI</glossterm>
<glosssee otherterm="scsi-glossary"/>
</glossentry>
<glossentry>
<glossterm>SG</glossterm>
<glosssee otherterm="sg-glossary"/>
</glossentry>
<glossentry>
<glossterm>SMB</glossterm>
<glosssee otherterm="smb-glossary"/>
</glossentry>
<glossentry>
<glossterm>SMP</glossterm>
<glosssee otherterm="smp-glossary"/>
</glossentry>
<glossentry>
<glossterm>SMTP</glossterm>
<glosssee otherterm="smtp-glossary"/>
</glossentry>
<glossentry>
<glossterm>SMTP AUTH</glossterm>
<glosssee otherterm="smtpauth-glossary"/>
</glossentry>
<glossentry>
<glossterm>SSH</glossterm>
<glosssee otherterm="ssh-glossary"/>
</glossentry>
<glossentry>
<glossterm>STR</glossterm>
<glosssee otherterm="str-glossary"/>
</glossentry>
<glossentry>
<glossterm>SVN</glossterm>
<glosssee otherterm="svn-glossary"/>
</glossentry>
<glossentry xml:id="smtpauth-glossary">
<glossterm><acronym>SMTP</acronym> Authentication</glossterm>
<acronym>SMTP AUTH</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="smb-glossary">
<glossterm>Server Message Block</glossterm>
<acronym>SMB</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="sg-glossary">
<glossterm>Signal Ground</glossterm>
<acronym>SG</acronym>
<glossdef>
<para>An <acronym>RS232</acronym> pin or wire that is the ground
reference for the signal.</para>
</glossdef>
</glossentry>
<glossentry xml:id="smtp-glossary">
<glossterm>Simple Mail Transfer Protocol</glossterm>
<acronym>SMTP</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="ssh-glossary">
<glossterm>Secure Shell</glossterm>
<acronym>SSH</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="scsi-glossary">
<glossterm>Small Computer System Interface</glossterm>
<acronym>SCSI</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="svn-glossary">
<glossterm>Subversion</glossterm>
<acronym>SVN</acronym>
<glossdef>
<para>Subversion is a version control system
currently used by the &os; project.</para>
</glossdef>
</glossentry>
<glossentry xml:id="str-glossary">
<glossterm>Suspend To <acronym>RAM</acronym></glossterm>
<acronym>STR</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="smp-glossary">
<glossterm>Symmetric MultiProcessor</glossterm>
<acronym>SMP</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="sci-glossary">
<glossterm>System Control Interrupt</glossterm>
<acronym>SCI</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>T</title>
<glossentry>
<glossterm>TCP</glossterm>
<glosssee otherterm="tcp-glossary"/>
</glossentry>
<glossentry>
<glossterm>TCP/IP</glossterm>
<glosssee otherterm="tcpip-glossary"/>
</glossentry>
<glossentry>
<glossterm>TD</glossterm>
<glosssee otherterm="td-glossary"/>
</glossentry>
<glossentry>
<glossterm>TFTP</glossterm>
<glosssee otherterm="tftp-glossary"/>
</glossentry>
<glossentry>
<glossterm>TGT</glossterm>
<glosssee otherterm="tgt-glossary"/>
</glossentry>
<glossentry>
<glossterm>TSC</glossterm>
<glosssee otherterm="tsc-glossary"/>
</glossentry>
<glossentry xml:id="tgt-glossary">
<glossterm>Ticket-Granting Ticket</glossterm>
<acronym>TGT</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
<glossentry xml:id="tsc-glossary">
<glossterm>Time Stamp Counter</glossterm>
<acronym>TSC</acronym>
<!-- From dg@, 20040814125503.GF40460@nexus.dglawrence.com -->
<glossdef>
<para>A profiling counter internal to modern &pentium; processors
that counts core frequency clock ticks.</para>
</glossdef>
</glossentry>
<glossentry xml:id="tcp-glossary">
<glossterm>Transmission Control Protocol</glossterm>
<acronym>TCP</acronym>
<glossdef>
<para>A protocol that sits on top of (e.g.) the <acronym>IP</acronym>
protocol and guarantees that packets are delivered in a reliable,
ordered, fashion.</para>
</glossdef>
</glossentry>
<glossentry xml:id="tcpip-glossary">
<glossterm>Transmission Control Protocol/Internet Protocol</glossterm>
<acronym>TCP/IP</acronym>
<glossdef>
<para>The term for the combination of the <acronym>TCP</acronym>
protocol running over the <acronym>IP</acronym> protocol. Much of
the Internet runs over <acronym>TCP/IP</acronym>.</para>
</glossdef>
</glossentry>
<glossentry xml:id="td-glossary">
<glossterm>Transmitted Data</glossterm>
<acronym>TD</acronym>
<glossdef>
<para>An <acronym>RS232C</acronym> pin or wire that data is transmitted
on.</para>
<glossseealso otherterm="rd-glossary"/>
</glossdef>
</glossentry>
<glossentry xml:id="tftp-glossary">
<glossterm>Trivial <acronym>FTP</acronym></glossterm>
<acronym>TFTP</acronym>
<glossdef>
<para/>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>U</title>
<glossentry>
<glossterm>UDP</glossterm>
<glosssee otherterm="udp-glossary"/>
</glossentry>
<glossentry>
<glossterm>UFS1</glossterm>
<glosssee otherterm="ufs1-glossary"/>
</glossentry>
<glossentry>
<glossterm>UFS2</glossterm>
<glosssee otherterm="ufs2-glossary"/>
</glossentry>
<glossentry>
<glossterm>UID</glossterm>
<glosssee otherterm="uid-glossary"/>
</glossentry>
<glossentry>
<glossterm>URL</glossterm>
<glosssee otherterm="url-glossary"/>
</glossentry>
<glossentry>
<glossterm>USB</glossterm>
<glosssee otherterm="usb-glossary"/>
</glossentry>
<glossentry xml:id="url-glossary">
<glossterm>Uniform Resource Locator</glossterm>
<acronym>URL</acronym>
<glossdef>
<para>A method of locating a resource, such as a document on
the Internet and a means to identify that resource.</para>
</glossdef>
</glossentry>
<glossentry xml:id="ufs1-glossary">
<glossterm>Unix File System Version 1</glossterm>
<acronym>UFS1</acronym>
<glossdef>
<para>The original &unix; file system, sometimes called the
Berkeley Fast File System.</para>
</glossdef>
</glossentry>
<glossentry xml:id="ufs2-glossary">
<glossterm>Unix File System Version 2</glossterm>
<acronym>UFS2</acronym>
<glossdef>
<para>An extension to <acronym>UFS1</acronym>, introduced in
&os; 5-CURRENT. <acronym>UFS2</acronym> adds 64 bit block
pointers (breaking the 1T barrier), support for extended file
storage and other features.</para>
</glossdef>
</glossentry>
<glossentry xml:id="usb-glossary">
<glossterm>Universal Serial Bus</glossterm>
<acronym>USB</acronym>
<glossdef>
<para>A hardware standard used to connect a wide variety of
computer peripherals to a universal interface.</para>
</glossdef>
</glossentry>
<glossentry xml:id="uid-glossary">
<glossterm>User ID</glossterm>
<acronym>UID</acronym>
<glossdef>
<para>A unique number assigned to each user of a computer,
by which the resources and permissions assigned to that
user can be identified.</para>
</glossdef>
</glossentry>
<glossentry xml:id="udp-glossary">
<glossterm>User Datagram Protocol</glossterm>
<acronym>UDP</acronym>
<glossdef>
<para>A simple, unreliable datagram protocol which is used
for exchanging data on a TCP/IP network. <acronym>UDP</acronym>
does not provide error checking and correction like
<acronym>TCP</acronym>.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>V</title>
<glossentry>
<glossterm>VPN</glossterm>
<glosssee otherterm="vpn-glossary"/>
</glossentry>
<glossentry xml:id="vpn-glossary">
<glossterm>Virtual Private Network</glossterm>
<acronym>VPN</acronym>
<glossdef>
<para>A method of using a public telecommunication
such as the Internet, to provide remote access to a
localized network, such as a corporate
<acronym>LAN</acronym>.</para>
</glossdef>
</glossentry>
</glossdiv>
</glossary>
