| SAP |
(Service
Access Point) he location at which two applications can exchange information. |
| SCALAR
CONTEXT |
A scalar
value is required. |
| SCRIPT |
A Perl
program is often called script as it is an interpreted set of instructions
in a text file (line a UNIX shell script). |
| SED |
A UNIX
editing utility. |
| SEGMENT |
A protocol
data unit (PDU) that consists of a TCP header and (optional) data. Also
used to refer to parts of a network that is divided into smaller parts (segments). |
| SEND WINDOW |
A range
of sequence numbers that can be received. |
| SERIAL |
Means
of communication in which digital data is sent one bit at a time over a
single physical line. |
| SERIAL
LINE INTERNET PROTOCOL |
(SLIP)
A protocol used to utilize TCP/IP over serial lines. |
| SERVER |
Provider
of a service. Also often refers to a piece of hardware or software that
provides access to information requested from it. See also client. |
| SERVER |
An application
that answers requests from other devices (clients). Also used as a generic
term for any device that provides services to the rest of the network, such
as capacity storage, and network access. |
| SERVER-SIDE
INCLUDE |
(SSI)
A command that directs the server to run a program. |
| SHAREWARE |
Software
that is made available by the author to anyone who wants it, with a request
to send the author a nominal fee if the software is used on a regular basis. |
| SHELL |
The UNIX
command interpreter (you often have a choice from a number of different
shells). |
| SIGNAL |
A means
of passing information between the operating system and a running process,
the process can trap the signal and respond accordingly. |
| SIGNATURE |
A personal
sign-off used in e-mail and newsgroup posts, often contained in a file and
automatically appended to the mail or post. Often contains organization
affiliation and pertinent personal information. |
| SIMPLE
MAIL TRANSFER PROTOCOL |
(SMTP)
In TCP/IP, an application providing electronic mail services. |
| SITE |
A group
of computers under a single administrative control. |
| SLIP |
(Serial
Line Internet Protocol) A way of running TCP/IP via the phone lines to allow
you to have a dialup Internet host. |
| SMARTLIST |
Software
that automates the management of electronic-mailing lists. See also listproc,
LISTSERV, and majordomo. |
| SMILEY
FACE |
An ASCII
drawing such as :-) (look at it sideways) used to help indicate an emotion
in a message. Also called emoticon. |
| SMTP |
(Simple
Mail Transport Protocol) The accepted communications protocol standard for
exchange of e-mail between Internet hosts. |
| SOCKET |
In TCP/IP,
an addressable point that consists of an IP address and a TCP or UDP port
number that provides applications with access to TCP/IP protocols. |
| SOCKET |
A means
of network communications via special entities. |
| SOCKET
ADDRESS |
The complete
designation of a TCP/IP node consisting of a 32 |
| SOCKET
DESCRIPTOR |
An integer
used by an application to identify the connection. |
| SOURCE |
The originating
device. |
| SOURCE
ROUTING |
A routing
method determined by the source device. |
| STRING |
A sequence
of characters. |
| SUBNET |
In TCP/IP,
part of a TCP/IP network identified by a portion of the Internet address. |
| SUBNET
ADDRESS |
The part
of the IP address that identifies the subnetwork. |
| SUBNET
MASK |
A set
of bits that excludes networks from having a system broadcast, instead restricting
the broadcast to a subnetwork. |
| SUBSCRIBE |
Become
a member of a mailing list or newsgroup; also refers to obtaining Internet
provider services. |
| SUBSCRIPT |
The index
number used to specify an element in an array. |
| SUBSTRING |
A contiguous
part of a string, starting at a certain character and continuing for a certain
length. |
| SURFING |
Jumping
from host to host on the Internet to get an idea of what can be found. Also
used to refer to briefly examining a number of different UseNet newsgroups. |
| SWITCHED
CONNECTION |
A data
link connection that is established on demand (like a telephone call). |
| SYN |
A segment
used in the start of a TCP connection to enable both devices to exchange
information defining characteristics about the session. It is also used
to synchronize the target and destination devices. |
| SYNCHRONOUS
DATA TRANSFER |
The transfer
of data between two nodes at a timed rate (as opposed to asynchronously). |
| SYNTAX |
A statement
that contains programming code. |