iTP Active Transaction Pages (iTP ATP) Programmer's Guide

Glossary
iTP Active Transaction Pages (iTP ATP) Programmer’s Guide—522292-002
Glossary-3
FTP
FTP. See File Transfer Protocol (FTP).
gateway. A special-purpose, dedicated computer that attaches to two or more networks and
routes packets from one to the other. In particular, an Internet gateway routes Internet
Protocol (IP) datagrams among the networks to which it is connected. Gateways route
packets to other gateways until they can be delivered to the final destination directly
across one physical network. The term is loosely applied to any machine that transfers
information from one network to another, as in mail gateway.
Guardian. The original application program interface (API) to the NonStop™ Kernel
operating system.
hierarchical routing. Routing based on a hierarchical addressing scheme. Most Internet
routing is based on a two-level hierarchy in which an Internet address is divided into a
network portion and a host portion. Gateways use only the network portion until the
datagram reaches a gateway that can deliver it directly. Subnetting introduces additional
levels of hierarchical routing
HyperText Markup Language (HTML). The tagging language used to format HyperText
documents on the World Wide Web. It is built on top of Standard Generalized Markup
Language (SGML).
HyperText Transport Protocol (HTTP). The communications protocol used for
transmitting data between servers and web clients (browsers) on the World Wide Web.
IEEE. See Institute of Electrical and Electronics Engineers (IEEE)
.
Institute of Electrical and Electronics Engineers (IEEE). An international industry group
that develops standards for many areas of electrical engineering and computers.
Internet address. The 32-bit address assigned to hosts that want to participate in the Internet
using TCP/IP. Internet addresses are the abstraction of physical hardware addresses, just
as the Internet is an abstraction of physical networks. Actually assigned to the
interconnection of a host to a physical network, an Internet address consists of a network
portion and a host portion. The partition makes routing efficient.
Internet Protocol (IP). The Internet standard protocol that defines the Internet datagram as
the unit of information passed across the Internet and that provides the basis for the
Internet connectionless, best-effort packet delivery service.
Internet. Physically, a collection of packet-switching networks interconnected by gateways,
along with protocols that allow them to function logically as a single, large, virtual
network. When written in uppercase, INTERNET refers specifically to the DARPA
Internet and the TCP/IP protocols it uses.
interoperability. The ability of software and hardware on multiple machines from multiple
vendors to communicate meaningfully.
IP. See Internet Protocol (IP)
.