iTP Secure WebServer System Administrator's Guide (Version 7.0)

Glossary
iTP Secure WebServer System Administrator’s Guide—523346-012
Glossary-4
Netscape
Netscape. See browser.
NonStop Servlets for JavaServer Pages (NSJSP). NonStop Servlets for JavaServer
Pages (NSJSP) are platform-independent server-side programs that programmatically
extend the functionality of Web-based applications by providing dynamic content from
a Webserver to a client browser over the HTTP protocol.
nowait mode. In Guardian file-system operations and in some APS operations, the mode in
which the called procedure initiates an input/output (I/O) operation but does not wait for
it to complete before returning control to the caller. In order to make the called
procedure wait for the completion of the operation, the application calls a separate
procedure. Compare wait mode.
Open System Services (OSS). An open system environment available for interactive or
programmatic use with the NonStop operating system. Processes that run in the OSS
environment use the OSS application program interface (API); interactive users of the
OSS environment use the OSS shell for their command interpreter.
OSS applications. POSIX compliant applications.
OSS. See Open System Services (OSS).
packet. The unit of data sent across a packet-switching network. While some Internet
literature uses it to refer specifically to data sent across a physical network, other
literature views the Internet as a packet-switching network and describes IP datagrams
as packets.
PATHMON. The central controlling process for a NonStop TS/MP application.
Pathway. The former name of NonStop TS/MP, a product providing transaction services for
persistent, scalable, transaction-processing applications.
physical layer. Layer 1 in the OSI Reference Model. This layer establishes the actual
physical connection between the network and the computer equipment. Protocols at
the Physical Layer include rules for the transmission of bits across the physical
medium and rules for connectors and wiring.
process. A running entity that is managed by the operating system, as opposed to a
program, which is a collection of code and data. When a program is taken from a file
on a disk and run in a processor, the running entity is called a process.
protocol. A formal description of the message formats and rules two or more machines
must follow to exchange messages. Protocols can describe low-level details of
machine-to-machine interfaces (for example, the order in which the bits from a byte are
sent across a wire) or high-level exchanges between application programs (for
example, the way in which two programs transfer a file across the Internet). Most
protocols include both intuitive descriptions of the expected interactions and more
formal specifications using finite state-machine models.