NonStop Servlets for JavaServer Pages (NSJSP) 6.0 System Administrator's Guide

Glossary
NonStop Servlets for JavaServer Pages (NSJSP) 6.0 System Administrator’s Guide—544548-004
Glossary-7
server
server. A process or set of processes that satisfy requests from web clients in a client-
server environment.
server class. A grouping of duplicate copies of a single server program, all of which
execute the same object program.
server process. A process that implements requests for an application and returns replies
to the requester.
server programs. In NonStop TS/MP, programs that handle the data manipulation and data
output activities for online transaction processing applications. Server programs are
designed to receive request messages from requester programs; perform the desired
operations, such as database inquiries or updates, security verifications, numerical
calculations, or data routing to other computer systems; and return reply messages to
requester programs.
servlet. A server-side Java program that any World Wide Web browser can access. It
inherits scalability and persistence from the Pathway CGI server that manages it. The
Java class named servlets executes in server environments such as World Wide
Web servers. The Servlet API is defined in a draft standard by Sun Microsystems.
Simple Mail Transfer Protocol (SMTP). The Internet standard protocol for transferring
e-mail messages from one machine to another. SMTP specifies how two mail systems
interact, and specifies the format of control messages the two mail systems exchange
to transfer mail.
SSL. See Secure Sockets Layer (SSL).
subnet address. An extension of the Internet addressing scheme that allows a site to use a
single Internet address for multiple physical networks. Outside of the site using subnet
addressing, routing continues as usual by dividing the destination address into an
Internet portion and local portion. Gateways and hosts inside a site using subnet
addressing interpret the local portion of the address by dividing it into a physical
network portion and host portion.
subsystem. The software and/or hardware facilities that provide users with access to a set
of communications services.
Transmission Control Protocol (TCP). The Internet standard transport-level protocol that
provides the reliable, full-duplex stream service on which many application protocols
depend. TCP allows a process on one machine to send a stream of data to a process
on another. It is connection-oriented, in the sense that before transmitting data
participants must establish a connection. Software implementing TCP usually resides
on the operating system and uses the Internet Protocol (IP) to transmit information
across the Internet. It is possible to terminate (shut down) one direction of flow across
a TCP connection, leaving a one-way (simplex) connection. The Internet protocol suite
is often referred to as TCP/IP because TCP is one of the two most fundamental
protocols.