of Internet Terms
An ISDN circuit consisting of two B (data) channels and one D (signaling)
channel, providing in most applications a total of 128 kbps of available
Per Second (BPS)
A measurement of data speed that refers to the number of data bits
being transferred across a circuit every second. Abbreviated "bps."
The general term for WWW client software. The most popular browsers
include Netscape, Mosaic, and Internet Explorer.
Subscriber Line (DSL)
Uses existing copper telephone lines for high-speed, digital internet
access. The closer you are to your local telephone company's main
office or node, the higher the connect speed is. The current range
for DSL extends about 36,000 feet from the telephone company's main
office or node.
In the Internet, a human-readable name that generally refers to
a specific organization or enterprise with the network, and for
which a distinct entry exists in the appropriate root server. For
example, blueone.net is a domain name; www.blueone.net refers to a system
called www within the blueone.net domain.
A server that maintains zero or more database records in the domain
name system, and which is capable of performing DNS resolution upon
request by accessing other domain name servers elsewhere in the
domain name system hierarchy.
A hierarchical, distributed system of servers that exist to maintain
databases enabling the conversion of human-readable domain name
(e.g., blueone.net) into IP addresses for computer use (e.g., 22.214.171.124),
An Internet client/server protocol, generally called FTP that allows
the transmission of files between computers and that presents a
file system interface to the user.
Generally a reference to the demarcation point between a local area
network and a wide area network; a router generally provides the
gateway function by sending data destined for locations outside
the local network to an outside system for further processing.
Text Mark-up Language (HTML)
The standard coding format for WWW documents also called web pages.
It allows for formatting of text and graphics, the display of which
is the responsibility of the userís web browser.
Text Transport Protocol (HTTP)
The protocol used on the World Wide Web to transfer data between
server and browser.
Services Digital Network (ISDN)
A type of digital telephone service that allows the transmission
of voice and/or data, generally consisting of multiple, independent
channels together form a single ISDN "line." Most ISDN applications
have three separate channels in a service type known as the "basic
The largest internetwork of its kind, a global collection of tens
of thousands of computer systems and networks including government,
educational, and private systems, that originated as a government
and defense research network in the United States in the early 1970ís.
address (internet address)
A 32-bit number assigned to individual networking interfaces (and
hence, usually individual computers) in a TCP/IP network. The address
is generally written as four single byte numbers separated with
periods, the so-called "dotted decimal" format, such as 126.96.36.199
for example. Each single byte refers to an 8-bit section of the
address, totaling the 32 bits of the address.
Originally a contraction of "modulator/demodulator," now an accepted
term indicated a device that serves as an interface between digital
signals (such as data streams on a computer) and analog signals
(which are audible sounds suitable for transmission over a conventional
A bit combination or "mask" used to describe which portion of an
IP address refers to the net or subnet, and which portion refers
to the individual host computer within that net or subnet. Primarily
used by routers during the processing of data packets, to discern
the proper routing of those packets. Newsgroups A series of public
discussion areas, each on a particular topic, distributed over the
A method by which an ICMP packet is sent over a TCP/IP network to
a particular address and echoed back to confirm that a particular
site can be reached via the network.
to Point Protocol (PPP)
An encapsulation protocol for TCP/IP network connections that can
be used in both dial-up (largely asynchronous) and dedicated (largely
synchronous) environments. For dial-up, it is viewed as a sort of
successor to the SLIP protocol with a broader set of features, and
thought by many to be technologically superior to SLIP.
Known as POP or POP3. A protocol that allows a remote user on a
TCP/IP LAN to retrieve e-mail messages from a mailbox. These messages
can be retrieved and read with a mail reader, such as Outlook Express.
Mail Transfer Protocol (SMTP)
The standard electronic mail exchange protocol of the Internet.
Control Protocol / Internet Protocol (TCP/IP)
A series of networking protocols used on the global Internet.
Wide Web (www)
A network that uses the HTTP protocol commonly referred to as WWW.
Users connect to WWW servers using a client called a browser, the
most popular of which include Netscape, Mosaic, and Internet Explorer,
to examine multi-media documents.