NonStop Servlets for JSP System Administrator's Guide

Glossary
NonStop Servlets for JavaServer Pages (NSJSP) System Administrator’s Guide—525644-001
Glossary-2
DNS
DNS. See Domain Name Server (DNS).
Document Type Definition (DTD). A DTD states what tags and attributes are used to
describe content in an SGML document, where each tag is allowed, and which tags
can appear within other tags. For example, in a DTD one could say that LIST tags can
contain ITEM tags, but ITEM tags cannot contain LIST tags. In some editors, when
authors are inputting information, they can place tags only where the DTD allows. This
ensures that all the documentation is formatted the same way.
Domain Name Server (DNS). A method for naming resources. The basic function of the
DNS is to provide information about network objects by answering queries.
domain. In the Internet, a part of the naming hierarchy. Syntactically, a domain name
consists of a sequence of names (labels) separated by periods (dots).
DTD. ISee Document Type Definition (DTD).
EJB. ISee Enterprise JavaBeans (EJB)
Enterprise JavaBeans (EJB). Enterprise JavaBeans (EJB) is a Java API developed by
Sun Microsystems that defines a component architecture for multi-tier client/server
systems. EJB systems allow developers to focus on the actual business architecture of
the model, rather than worry about endless amounts of programming and coding
needed to connect all the working parts. This task is left to EJB server vendors.
Developers just design (or purchase) the needed EJB components and arrange them
on the server. Because EJB systems are written in Java, they are platform
independent. Being object oriented, they can be implemented into existing systems
with little or no recompiling and configuring.
Ethernet. A popular local area network (LAN) technology invented at the Xerox Corporation
Palo Alto Research Center. An Ethernet itself is a passive coaxial cable; the
interconnections all contain active components. Ethernet is a best-effort delivery
system that uses CSMA/CD technology. Xerox Corporation, Digital Equipment
Corporation, and Intel Corporation developed and published the standard for 10 Mbps
Ethernet.
File Transfer Protocol (FTP). The Internet standard, high-level protocol for transferring files
from one machine to another. Usually implemented as application-level programs, FTP
uses the TELNET and Transmission Control Protocol (TCP) protocols. The server side
requires a web client to supply a login identifier and password before it will honor
requests.
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