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To help those of you who are wondering what all those acronyms and
funny-sounding words used by "computer types" really mean when they
talk about the Internet, I've added this simple glossary of common
Internet terms. As the Internet develops, we get to hear more n more
funny-sounding terms used. If you can get the hang on anyone head here and check
out this page!
The glossary items are listed in alphabetical order, with hyperlinks embedded
in the definitions. If there's an Internet term in a definition that you don't
understand, you can probably link directly to another definition that explains
it.
- Acceptable
Use Policy (AUP)
- This refers to policies that restrict the way in which a network may be
used. Usually, a network administrator makes and enforces decisions dealing
with acceptable use.
- Address
- See either IP Address or Email
Address.
- Address
Mask
- The address mask is used to identify the parts of an IP
address that correspond to the different sections (separated by
dots). It's also known as the "subnet mask" since the network
portion of an address can be determined by the encoding inherent in an IP
address.
- Advanced
Research Projects Agency Network (ARPANET)
- A pioneering long-haul network funded by what's now-called DARPA (formerly
known as ARPA). It was the foundation on which the Internet
was built.
- Agent
- The part of a system that performs information preparation and exchange on
behalf of an application.
- Alias
- A type of nickname (usually short and easy to remember) that refers to a
type of network resource. Aliases are used so you won't have to remember the
long and difficult names typical of network resources.
- Anonymous
FTP
- By using the word "anonymous" as your user ID and your email
address as the password when you login to an FTP
site, you can bypass local security checks and gain limited access to public
files on the remote computer. This type of access is available on most FTP
sites, but not all.
- Application
- Sometimes known as a client or an
"app" it's a program that performs a specific function. FTP, Mail,
Gopher, Mosaic, and Telnet clients are the most common examples of Internet
applications.
- Archie
- You'll usually hear this term referred to in the phrase archie search.
Archie is a way of automatically gathering, indexing and sometimes even
retrieving files on the Internet. Most good archie clients are able to FTP
files once you've found the information you're looking for.
- Archive
- A collection of files stored on an Internet machine. FTP
sites are known as archives.
- ARPANET
- See Advanced Research Projects Agency Network.
- Asynchronous
Transfer Mode
- A transfer method that dynamically allocates bandwidth using a fixed-size packet,
or cell. Also known as fast packet.
- ATM
- See Asynchronous Transfer Mode.
- AUP
- See Acceptable Use Policy.
- Authentication
- Any process that ensures that users are who they say they are. When you
type your name and password, you are authenticated and allowed access.
- Bandwidth
- This refers to the difference (measured in Hz), between the highest and
lowest frequencies of a transmission. Most people loosely refer to bandwidth
as the amount of data that can be transferred over a network connection.
- BBS
- See Bulletin Board System.
- Berkeley
lnternet Name Domain
- An early version of a DNS server developed by
the University of California at Berkeley. Most Internet hosts run a version
of BIND.
- Bitnet
- An computer network devoted to academic use that provides email
and file transfer services using a store-and-forward protocol.
It is based on the IBM Network Job Entry protocols. A more recent version of
Bitnet (known as Bitnet-II) encapsulates the Bitnet protocol within IP
packets.
- Bounce
- If you send email and it fails to arrive at
its intended recipient for any reason (incorrect user name, network failure,
etc.), the message "bounces" and returns to you. The subject line
in a bounced message usually says something like: Undeliverable Mail
or Message Undeliverable.
- BTW
- Acronym meaning By The Way. Seen mostly in IRC
sessions.
- Bulletin
Board System
- A computer which typically provides email
services, file archives, and announcements of
interest to the bulletin board system's operator (known as a sysop). BBS's
started out as hobbies for computer enthusiasts, and were mostly accessible
by modem. Recently, however, more and more BBS's are being connected to the Internet.
- CCIRN
- See Coordinating Committee for Intercontinental
Research Networks.
- CCITR
- See Comite Consultatif International de Telegraphique
et Telephonique.
- CERT
- See Computer Emergency Response Team.
- Challenge-Handshake
Authentication Protocol (CHAP)
- An authentication method that can be
used when connecting to an Internet Service Provider.
CHAP allows you to login to your provider automatically, without the need
for a terminal screen. It is more secure than the Password
Authentication Protocol (another widely used authentication method)
since it does not send passwords in text format.
- CHAP
- See Challenge-Handshake Authentication Protocol.
- Chat
- Another term for IRC . Also, an acronym meaning Conversational
Hypertext Access Technology.
- CIX
- An acronym meaning Commercial Internet
Exchange.
- Client
- In Internet terms, it's an application that
performs a specific function, such as Telnet or
FTP. It's the front-end to an Internet
process. In more general terms, a client is computer system or process that
requests a service of another computer system or process. The much talked
about client-server architecture refers to a workstation requesting
the contents of a file from a server.
- Comité
Consultatif International de Telegraphique et Telephonique (CCITT)
- French for International Telephone and
Telegraph Advisory Council.. It's an organization that plays a major
role in the United National International Telecommunications Union (ITU).
The CCITT is responsible for making technical recommendations about
communications systems worldwide. Every four years, CCITT updates the
standards, most recently in 1996.
- Computer
Emergency Response Team (CERT)
- The CERT was formed by DARPA in November 1988
in response to the Internet worm incident. CERT exists to facilitate Internet-wide
response to computer security events involving Internet hosts
and to conduct research targeted at improving the security of existing
systems. They maintain an archive of
security-related issues on their FTP server at ftp.cert.org,
their email address is cert@cert.org,
and their 24-hour telephone Hotline for reporting Internet security issues
is (412) 268-7090.
- Coordinating
Committee for Intercontinental Research Networks (CCIRN)
- A committee that provides a forum for North
American and European network research organizations to cooperate and plan.
- Corporation
for Research and Educational Networking (CREN)
- An organization formed in October 1989, when Bitnet
and CSNET were combined. CSNET is no longer around, but CREN still operates
Bitnet.
- Cracker
- Substantially different from hackers,
crackers are users who try to gain illegal access to computers. They are
usually malicious in their intentions.
- Cyberspace
- The world of computers and the society that
gathers around them, as referred to by William Gibson in his fantasy
novel Neuromancer. It now loosely refers
to the online world and even more loosely to the Internet.
- Data
Encryption Key (DEK)
- Much like an actual key used for locking and
re-opening doors, DEKs are used for the encryption and decoding of message
text, sometimes in the form of a digital signature.
- Data
Encryption Standard (DES)
- A standardized encryption method widely used
on the Internet.
- Datagram
- A block of data that is "smart"
enough (actually, which carries enough information) to travel from one Internet
site to another without having to rely on earlier exchanges between the
source and destination computers (not to be confused with a Candygram).
- DDN
- See Defense Data Network.
- DECnet
- The proprietary network protocol
designed by Digital Equipment Corporation.
- Dedicated
Line
- A communications line that is used solely for
computer connections. If you buy an additional phone line for your modem,
that's a dedicated line. There are other types of dedicated lines (such as T3s
and T1s) that are used for larger network entities.
- Defense
Data Network (DDN)
- A global communications network that serves
the US Department of Defense. It is made up of a network called MILNET,
other portions of the Internet, and
classified networks which are not part of the Internet. The DDN is used to
connect military installations and is managed by the Defense Information
Systems Agency. It was originally developed by DARPA.
- Dialup
- A widely-used method of accessing the Internet.
A dialup connection uses regular phone lines to connect one computer to
another via modem.
- Distributed
Computing Environment (DCE)
- An architecture based on standard programming
interfaces, conventions, and server functionalities used for distributing
applications transparently across networks. The DCE is controlled and
promoted by the Open Software Foundation (OSF), a consortium of vendors
including DEC, IBM and Hewlett Packard.
- DNS
- See Domain Name Service.
- Domain
- A "logical" region of the Internet.
People sometimes refer to them loosely as "sites." Generally, a
domain corresponds to an IP address or an
area on a host.
- Domain
Name System (DNS)
- The DNS is a static, hierarchical name service
used with TCP/IP hosts, and is housed on a
number of servers on the Internet. Basically,
it maintains a database for figuring out and finding (or resolving) host
names and IP addresses on the Internet.
This allows users to specify remote computers by host
names rather than numerical IP addresses (if you've used UNIX, you may have
heard the DNS referred to as the BSD UNIX BIND
service). For example, go to a DOS prompt in Windows 95, the % prompt in
UNIX, or use a ping client for Windows 3.1 or Mac, and type ping
www.winfiles.com. This will check the DNS server you have configured,
look up the numerical IP address for www.winfiles.com, and then ping
that server's IP address. The advantage of the DNS is that you don't have to
remember numerical IP addresses for all the Internet sites you want to
access.
- Dot
Address (or Dotted Decimal Notation)
- The common notation for IP
addresses of the form 1.2.3.4; where each number represents one byte
in the four-byte IP address.
- Electronic
Frontier Foundation (EFF)
- A foundation that addresses social and legal
issues arising from the impact of computers on society.
- Electronic
Mail (Email)
- A method by which computer users can exchange
messages with each other over a network. Email is probably the most
widely-used communications tool on the Internet.
There are many quirky conventions to Email, but most entail a To:, From:,
and Subject: line. One of email's advantages is its ability to be
forwarded and replied to easily. If an email is badly received by a group or
user, the sender is likely to get flamed.
- Email
- See Electronic Mail.
- Email
Address
- Your email address
is made up of several parts. By convention, addresses use lowercase letters
with no spaces. The first part of the address, the username, identifies a
unique user on a server. The @
(pronounced at) separates the username from the host
name. The host name uniquely identifies the server computer and is the last
part of the Internet email address (for
example, our webmaster's email address is webmaster@winfiles.com).
Large servers, such as those used at universities or large companies
sometimes contain multiple parts, called subdomains. Subdomains and the host
name are separated by a period (but it's pronounced dot). The
three-letter suffix in the host name identifies the kind of organization
operating the server (some locations use a two-letter geographical suffix).
The most common suffixes are: .com (commercial), .edu
(educational), .gov (government), .mil (military), .net
(networking), and .org (non-commercial). More suffixes are under
consideration. Addresses outside of the U.S. sometimes use a two-letter
suffix that identifies the country in which the server is located. Some
examples are: .jp (Japan), .nl (The Netherlands), .uk
(United Kingdom), .ca (Canada), and .tw (Taiwan).
- Encryption
- The basis of network security. Encryption
encodes network packets to prevent anyone except the intended recipient from
accessing the data.
- Ethernet
- A standard and probably the most popular
connection type for Local Area Networks (LANs). It
was first developed by Xerox, and later refined by Digital, Intel and Xerox
(see also DIX). In an Ethernet configuration,
computers are connected by coaxial or twisted-pair cable where they contend
for network access using a Carrier Sense Multiple Access with Collision
Detection (CSMA/CD) paradigm. Ethernet can transfer information at up to 10
Megabit-per-second (Mb/s).
- FAQ
- Acronym for Frequently Asked Questions.
FAQs are widely available on the Internet and
usually take the form of large, instructional text files. They are written
on a wide variety of topics, and are usually the most up-to-date source for
specialized information.
- Federal
Networking Council (FNC)
- A collection of federal agencies that have
heavy interests in federal networks using TCP/IP
and the Internet. Representatives from DoD,
DOE, DARPA, NSF, NASA and HHS are the major members of the FNC.
- File
Transfer Protocol (FTP)
- The most widely-used way of downloading and
uploading (getting and putting) files across an Internet
connection. The File Transfer Protocol is a standardized way to connect
computers so that files can be shared between them easily. There is a set of
commands in FTP for making and changing directories, transferring, copying,
moving, and deleting files. Formerly, all FTP connections were text based,
but graphical applications are now available that make FTP commands as easy
as dragging and dropping. Numerous FTP clients
exist for a number of platforms.
- Finger
- A UNIX command that shows information about a
user or group of users on the Internet. When
executed, the Finger command usually returns the user's real name, whether
or not they have unread mail, and the time and date of their last login.
Finger also displays two files (if they exist) located in the home directory
of the user you fingered. These two files (the .PLAN and the .PROJECT
files.) are simply ASCII text files that can be entered by the user to
display any information upon being fingered.
- Flame
- A negative response to an email
message or newsgroup posting. If you post an
article or send an email to an audience that deems your message
inappropriate, expect to get flamed. The most common recipients of flames
are users who post commercial messages in public forums, those who post
adult material in non-adult areas of the Internet,
and users who post or send make racial or gender-biased comments. The worst
sort of flame is known as a mail-bomb, which occurs when the user
being flamed open his or her email and receives a flood of letters with
unusually long file attachments that make his or her computer crash.
- Follow-up
- A reply to an email
or newsgroup posting that continues the
conversation or idea, known as a thread.
- Freenet
- A network system made up of community-based bulletin
board systems with email, information
services, interactive communications, and conferencing. They are usually
funded and operated by individuals or organizations much like public
television. Freenet providers are part of the National Public Telecomputing
Network (NPTN), a Cleveland-based organization that works to make computer
networking services as freely available as public libraries.
- FTP
- See File Transfer Protocol.
- Gateway
- A kind of "go-between" device or
program that passes information between networks that normally couldn't
communicate. What used to be called a gateway is now called a router.
Not to be confused with a protocol converter.
- Gopher
- An information search and retrieval tool used
widely for research. Gopher information is stored hierarchically on
computers across the Internet. It uses a
simple protocol that allows a client to access information from a multitude
of numerous Gopher servers at one time, creating what's known as gopher
space. The most common search tools in gopher are Veronica
and Jughead. Gopher clients exist for most
platforms.
- Hacker
- A computer user who works to understand the
ins and outs of computers, networks, and the Internet
in general. Hackers are generally benign, and are not to be confused with
the more malicious crackers.
- Host
- A computer that is attached to a network or
the Internet. Hosts allow users on client
machines to connect and share files or transfer information. Individual
users communicate with hosts by using client application programs.
- Host
Address
- The address of a host
computer on the Internet.
- Hostname
- The name given a host
computer connected to the Internet.
- HTML
- See HyperText Markup
Language.
- Hypermedia
- The combination of hypertext
and multimedia in an online document.
- Hypertext
- A type of text that allows embedded links
to other documents. Clicking on or selecting a hypertext link displays
another document or section of a document. Most World Wide
Web documents contain hypertext.
- Hypertext
Markup Language (HTML)
- The standard way to mark text documents for
publishing on the World Wide Web. HTML is
marked-up using tags surrounded by brackets. To see what tagged HTML
text looks like, select the View Source feature from the menus in the
program you are using to view this document now, and you'll see a display of
the HTML text used to create this page.
- IMHO
- Acronym for In My Humble Opinion.
Generally seen in IRC, email,
or Usenet postings.
- Integrated
Services Digital Network (ISDN)
- A relatively new technology which combines
voice and digital network services in a single medium. ISDN makes it
possible for communications carriers to offer their customers digital data
services as well as voice connections through a single line. CCITT
defines the standards relating to ISDN.
- International
Organization for Standardization (ISO)
- An organization of 89 member countries
(founded in 1946) responsible for setting world standards in many
electronics areas. Members of the ISO are the national standards
organizations of the member countries.
- Internet
- A large, uncontrolled, unadministered,
anarchic cyber-state that will soon take over the world! Basically, it's
just everyone's computers hooked together. It's not a corporation,
organization, or entity in itself. When you connect to the Internet, you
actually become part of it. Always capitalized, the word Internet can also
be referred to colloquially as the "Net."
- Internet
Assigned Numbers Authority (IANA)
- The central registry for various Internet
protocol parameters, such as port, protocol and enterprise numbers, and
options, codes and types. The currently assigned values are listed in the Assigned
Numbers document. If you'd like more information or want to request a
number assignment, you can email IANA at iana@isi.edu.
- Internet
Protocol (IP)
- An industry standard, connectionless,
best-effort packet switching protocol used as
the network layer in the TCP/IP Protocol Suite.
- Internet
Protocol Address (IP Address)
- The 32-bit address defined by the Internet
Protocol. Every resource on the Internet
has a unique numerical IP address, represented in dotted decimal notation.
IP addresses are the closest thing the Internet has to phone numbers. When
you "call" that number (using any number of connection methods
such as FTP, HTTP, Gopher,
etc.) you get connected to the computer to which that IP address is
assigned.
- Internet
Service Provider (ISP)
- An ISP is a company that maintains a network
that is linked to the Internet via a
dedicated communication line, usually a high-speed link known as a T1.
An ISP offers use of its dedicated
communication lines to companies or individuals (like me) who can't
afford $1,300 a month for a direct connection. Using a modem, you can dial
up to a service provider whose computers will connect you to the Internet,
typically for a fee.
- Internet
Society (ISOC)
- A non-profit, professional organization that
supports the technical evolution of the Internet
and stimulates the interest of members of the scientific and academic
communities, industry, and the public regarding technology and the
applications of the Internet. The ISOC also promotes the development of new
applications for the Internet by publishing a quarterly newsletter, the
Internet Society News, and by and holding an annual conference, called INET.
- InterNIC
- Meaning Internet information Center,
InterNIC is the combined name for the providers of registration,
information, and database services to the Internet.
InterNIC is who you contact if you want to register a domain
name on the Internet.
- IP
- See Internet Protocol.
- IP Address
- See Internet Protocol
Address.
- IRC
- The world-wide party line of the '90s.
IRC allows multiple users to converse in real time on different channels.
Channels (which have a # sign preceding their name) vary in traffic
and content. Channel operators (or Ops) moderate the conversation, and have
the ability to "kick" people from channels, or even ban them if
their actions warrant it. IRC clients are
available for nearly all platforms.
- ISDN
- See Integrated Services
Digital Network.
- ISO
- See International
Organization for Standardization.
- ISOC
- See Internet Society.
- LAN
- Acronym for Local Area Network. LANs
are now commonplace in most businesses, allowing users to send email
and share resources such as files, printers, modems, etc. Currently, most
larger companies are connection their LANs to the Internet,
allowing users to connect to resources within or outside the LAN.
- Leased
Line
- A dedicated,
full-time connection used to link a user or network to an Internet
Service Provider or another network.
- Listserv
- An automated mailing list distribution system.
Listservs exist for a multitude of professional, educational, and special
interest groups. Usually, you have to send an email
to a Listserver with the subject SUBSCRIBE listname or something to
that effect. You are then subscribed to that mailing list and
(depending on the service) will receive regular mail from a single source or
from all members who send email to the Listserver. Listserv was originally
designed for the Bitnet/EARN network.
- Lurking
- Non-active participation on the part of a
subscriber to an mailing list, a Usenet
newsgroup, and IRC channel, a video connection, or
any other Internet communication device. If
you're "lurking," you're generally just listening to the
discussion. It's usually best to lurk if you're a beginner or if you are new
to a communication group. This allows you to get up to speed on the history
or acceptable behavior of the group.
- Mail
Reflector
- A program that distributes files or
information in response to requests sent via email.
Many Listservs have mail reflectors. You can
request documents of a reflector by sending message with the subject SEND
document name or a similar command. Mail reflectors are also being used
to provide FTP-like services for users with
limited Internet access.
- Mailing
List
- A list of email
addresses used to forward messages to groups of people. When you subscribe
to a mailing list, you receive all mail sent to that list (see also Listserv).
- MIME Encoding
- See Multipurpose Internet
Mail Extensions Encoding.
- Mirror
Site
- Due to the popularity of some FTP
and Web sites, mirror sites came into existence.
They are areas on a computer that "mirror" or contain an exact
replica of the directory structure of another computer. If you have trouble
getting connected to an FTP site, for example, because of the high amount of
traffic, you can usually connect to a mirror site that contains the same
information on a different computer. Mirror sites are usually updated once a
day.
- Moderator
- The person who manages moderated mailing
lists, newsgroups, or online discussion
forums for services such as AOL, CompuServe, or the Microsoft Network.
- Mosaic
- A graphical browser for the World
Wide Web that supports hypermedia.
The NCSA (National SuperComputer Association) invented the Mosaic browser,
which quickly became the industry standard. Netscape Communications
Corporation later invented the Netscape Navigator, which has
redefined the content on the Web. Other major companies entered the browser
market with little success, until Microsoft launched their Internet
Explorer which now contends with Navigator as the browser of choice. The
term Mosaic is sometimes used incorrectly as a synonym for the World
Wide Web.
- MUD
- Acronym for Multi-User Dungeon or Domain.
MUDs are role-playing games that take place on a computer. Users can Telnet
to a MUD host, and create a character. MUDs can be action, adventure, or
fantasy games, and allow you to save your character for future play. Some
MUDs have thousands of registered characters, and most foster a community or
culture of their own. These are highly-addictive areas of the Internet,
and users can spend many hours enthralled in this type of activity.
- Multipurpose
Internet Mail Extensions Encoding (MIME Encoding)
- MIME is a standardized method for organizing
divergent file formats. The method organizes file formats according to the
file's MIME type. When Internet (usually email)
software retrieves a file from a server, the
server provides the MIME type of the file, and the file is decoded correctly
when transferred to your machine.
- Netiquette
- The combination of the words Net and etiquette,
this refers to the proper behavior on a network, and more generally the Internet.
The key element in Netiquette is remembering that actual people are on the
other end of a computer connection, and offensive comments or actions are
just as offensive even if you can't see your recipient.
- Network
File System (NFS)
- A protocol developed by Sun Microsystems. NFS
allows a computer to access and use files over a network as if they were
local. This protocol has been incorporated into the products of more
two-hundred companies, and is now a de facto Internet
standard.
- Network
News Transfer Protocol (NNTP)
- An industry standard protocol for the
distribution, inquiry, retrieval, and posting of news
articles.
- NFS
- See Network File System.
- NNTP
- See Network News Transfer
Protocol.
- Open
Systems Interconnection (OSI)
- A suite of protocols,
designed by ISO committees to be the international
standard computer network architecture.
- OSI
- See Open System
Interconnection.
- Packet
- The common term for the standard unit of data
sent across a network.
- Packet
Internet Gopher (PING)
- The simplest way to test or time the response
of an Internet connection. A PING
sends a request to an Internet host and waits for
a reply called (yep, you guessed it), a PONG. When you PING an
address, you get a response telling you the number of seconds it took to
make the connection. PING clients exist for a
number of platforms, or you can use a UNIX or Windows 95 prompt to issue a
PING command directly.
- PAP
- See Password Authentication
Protocol.
- Password
Authentication Protocol (PAP)
- One of the many authentication
methods that can be used when connecting to an ISP.
PAP allows you to login automatically, without having to use a terminal
window to type in your username and password. One warning about PAP:
passwords are sent over the connection in text format, which means there is
no protection if someone is "listening-in" on your connection.
- Point
Of Presence (POP)
- An installation of telecommunications
equipment, usually digital leased lines
and multi-protocol routers.
- Point-to-Point
Protocol (PPP)
- A protocol that
provides a method for transmitting packets over
serial point-to-point links. PPP is one of the most popular methods for dialup
connections to the Internet, since it allows
you to use other standard protocols (such as IPX, TCP/IP,
and Netbeui) over a standard telephone connection, but it can also be used
for LAN connections.
- POP
- See either Point
Of Presence or Post Office
Protocol.
- Post
Office Protocol (POP)
- A protocol
designed to allow single users to read mail from a server.
There are three versions: POP, POP2, and POP3. When email
is sent to you, it is stored on the server until accessed by you. Once you
are authenticated, the POP is used to
transmit the stored mail from the server to your local mailbox on your client
machine.
- Posting
- The sending of an article to a Usenet
newsgroup or the placing of a message on a BBS.
- PPP
- See Point-to-Point Protocol.
- Protocol
- Simply, the "language" spoken
between computers to help them exchange information. More technically, it's
a formal description of message formats and the rules that two computers
must follow to exchange those messages. Protocols can describe low-level
details of machine-to-machine interfaces (like the order in which bits and
bytes are sent across a wire) or high-level exchanges between allocation
programs (the way in which two programs transfer a file across the Internet).
- Read the
Flippin' Manual (RTFM)
- An acronym used to respond to a simple or
commonly asked question.
- Request
For Comments (RFC)
- A document series, begun in 1969, which
describes the Internet suite of protocols
and related experiments. Not all (actually, very few) RFCs describe Internet
standards, but all Internet standards are written up as RFCs.
- RFC
- See Request for Comments.
- Router
- A device that forwards traffic between
networks. Forwarding decisions are made based on network layer information
and routing tables, often constructed by routing protocols.
- Serial
Line lnternet Protocol (SLIP)
- Similar to PPP, SLIP
is another standard protocol used to run TCP/IP
over serial lines, such as telephone circuits or RS-232 cables. Unlike PPP,
however, SLIP does not work on a LAN connections.
SLIP used to be the most popular way for dialup
users to access the Internet, but PPP quickly
overcame SLIP because of its ease of use and integration into many client
operating systems.
- Server
- Simply, a computer that provides resources,
such as files or other information. Common Internet
servers include file servers and name servers Domain Name
Service.
- Service Provider
- See Internet Service
Provider.
- SIG
- Acronym for Special Interest Group.
SIGs sponsor a variety of Listservs, IRC
channels, and Internet sites. Also a nickname
for a Signature.
- Signature
- An ASCII text file that can be automatically
attached to the bottom of a piece of email or newsgroup
posting that identifies the sender. Many signatures (or sigs) use
symbols and characters to create images or words to make the sig more
interesting.
- Simple
Mail Transfer Protocol (SMTP)
- A protocol used
to transfer email. SMTP transfers mail from server
to server, and the end user must use POP (see also Post
Office Protocol) to transfer the messages to their machine.
- Simple
Network Management Protocol (SNMP)
- Developed to manage nodes on an IP
network, SNMP is an Internet standard protocol.
It can be used to manage wiring hubs, video toasters, CD ROM jukeboxes, and
many other devices.
- SLIP
- See Serial Line Internet
Protocol.
- Smiley
- The use of punctuation marks and other symbols
or characters to portray moods when typing, especially in email
messages and IRC. Here's an example of a simple
smiley: :) . If you don't see it, tilt your head to the left and look
at it. The colon makes the eyes and the parenthesis makes the smiley mouth.
The smile means happiness (like if someone says something funny) or it often
denotes sarcasm. Other combinations of characters can express many other
emotions. You may also hear them referred to as emoticons.
- SRI
- A research institute based in California that
runs the Network Information Center (NISC).
- Subnet Mask
- See Address Mask.
- T1
- One of AT&T's terms used to denote the
type of connection of a host to the Internet.
A T1 transmits a DS-1 formatted digital signal at 1.544 megabits per
second.
- T3
- One of AT&T's terms used to denote the
type of connection of a host to the Internet.
A T3 transmits a DS-3 formatted digital signal at 44.746 megabits per
second - about 40 times the speed of a T1.
- TCP/IP
- See Transmission Control
Protocol/Internet Protocol.
- TCP/IP
Stack
- To properly use the TCP/IP protocol,
PCs require a TCP/IP stack. This consists of
TCP/IP software, sockets software (such as WINSOCK.DLL
for Windows machines), and hardware driver software (known as packet
drivers). Windows 95 comes with Microsoft's own built-in TCP/IP stack,
including version 1.1 of Microsoft's WINSOCK.DLL and packet drivers.
- Telnet
- The Internet
standard protocol to connect to remote
terminals. Telnet clients are available for
most platforms. When you Telnet to a UNIX site, for example, you can issue
commands at the prompt as if the machine were local.
- TN3270
- A slight variation of Telnet
used to connect the user to an IBM mainframe. TN3270 clients
exist for most platforms.
- Token
Ring
- A type of LAN in
which networked computers are wired into a ring. Each computer (or
node) is in constant contact with the next node in the ring. A control
message, called a token, is passed from one node to another, allowing
the node with the token to send a message out to the network. If the ring is
"broken" by one computer losing contact, the network can no longer
communicate. The IEEE 802.5 token ring standard is the most common.
- Topology
- The layout of all the computers on a network
and the links that join them.
- Transmission
Control Protocol/Internet Protocol (TCP/IP)
- TCP/IP is the standard communications protocol
required for Internet computers. To
communicate using TCP/IP, PCs need a set of software components called a TCP/IP
stack. Macintoshes typically use a proprietary software package
called MacTCP. Most UNIX systems are built with TCP/IP capabilities.
- UNIX-to-UNIX
Copy (UUCP)
- Originally, UUCP was a program that allowed
UNIX systems to transfer files over phone lines. Currently, the term is used
to describe the protocol that passes news
and email across the Internet.
- Usenet
- Usenet groups are more commonly known as newsgroups.
There are thousands of groups hosted on hundreds of servers around the
world, dealing with various topics. Newsreader software is required to
properly download and view articles in the groups, but you can
usually post an article to a group simply by emailing
to it.
- UUCP
- See UNIX-to-UNIX Copy.
- Veronica
- A search engine (not unlike Archie)
that is built into Gopher. It allows searches
of all gopher sites for files, directories and other resources.
- Universal
Resource Locator (URL)
-
More commonly referred to as the URL, the Universal Resource Locator
refers to the entire address that is recognized "universally" as
the address for an Internet resource. Each resource on the Internet has a
unique URL. URLs begin with letters that identify the resource type, such as
http, ftp, gopher, etc. These types are followed by a colon and two slashes.
Next, the computer's name is listed, followed by the directory and filename
of the remote resource. For example, the URL for this glossary is http://geocities.datacellar.net/razashome/glossary.html.
- W3
- See World Wide Web.
- WAIS
- See Wide Area Information
Service.
- White
Pages
- Databases containing email
addresses, telephone numbers, and postal addresses of Internet
users. You can search the Internet White Pages to find information about
particular users.
- WHOIS
- An Internet
program (related to Finger and the White
Pages) that lets you enter an Internet entity (such as domains,
networks, and hosts) and display information such
as a person's company name, address, phone number and email
address.
- Wide
Area Information Service (WAIS)
- A distributed information service and search
engine that allows natural language input and indexed searching. Many Web
search utilities use a WAIS engine.
- Winsocks
- Stands for Windows Sockets. Winsocks is
a set of specifications or standards for programmers creating TCP/IP
applications for use with Windows.
- World
Wide Web (WWW or W3)
- The Web is a collection of online
documents housed on Internet servers around
the world. The concept of the Web was created by researchers at CERN in
Switzerland. Web documents are written or coded in HTML.
To access these documents, you have to use a Web
browser. When these browsers access (or hit) a page, the server uses
the HyperText Transfer Protocol (HTTP) to send the document to your
computer.
- Worm
- A computer program that replicates itself and
is self-propagating. While viruses are designed to cause problems on a local
system and are passed through boot sectors of disks and through files, worms
are designed to thrive in network environments. Network worms were first
defined by Shoch & Hupp of Xerox in ACM Communications (March 1982). The
most famous (or infamous) worm was the Internet Worm of November 1988. It
successfully propagated itself on over 6,000 systems across the Internet.
- WWW
- See World Wide Web.
Courtesy: WinFiles.com Glossary
written by Steve Jenkins
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