Configuring and Managing MPE/iX Internet Services (MPE/iX 6.0)

Glossary 187
Glossary
RESLVCNF.NET.SYS An
initialization file for the domain
name resolver. It contains
information needed by the
network to determine how to
resolve a domain name to an IP
address.
S
server A node on a network or
internetwork that provides
on-demand service to requesting
clients.
services file The file which
associates official service names
and aliases with the port number
and protocol the services use. In
the HFS name space, this file is
/etc/services.
SERVICES.NET.SYS The
services name file, described
above.
socket A special kind of file that
uniquely identifies one end point
of an Internetwork connection. A
socket specifies the protocol
being used (for example TCP) the
Internetwork address (for
example 192.44.244.7) and the
integer identifiying the process
(for example 377). A socket pair
completely specifies the two
processes that make up an
Internetwork connection.
stream services A type of
service that uses Transmission
Control Protocol (TCP) to
exchange information on an
internetwork. Stream services
rely on an established, known
connection between two systems,
client and host, similar to a
leased or dedicated phone line
between two parties.
stream socket A type of socket
that is used to establish stream
services between two systems.
subnet Another name for a
network, especially if the network
is part of an internetwork. The
word subnet is also a synonym for
intranet.
subnet mask A grouping of bits
that determines which bits of the
IP address will be used to define a
subnetwork. The subnet mask is
configured using the NMMGR
utility and specified in the same
format as an IP address.
T
TAC Telnet Access Card. A board
within a DTC 48 or 72MX.
TCP/IP Transmission Control
Protocol/Internet Protocol. A set
of rules that establishes and
maintains connections between
nodes on an internetwork.
TCP/IP regulates the flow of data,
breaks messages into smaller
fragments if necessary (and
reassembles the fragments at the
destination), detects errors, and
retransmits messages if errors
have been detected.
TEB Telnet Express Box. An HP
product consisting of a DTC
dedicated to providing protocol
conversion between Telnet on