AT&T 3B2 Off-Line Diagnostic Manual page 722

Glossary----------------------------------------------------------------------------
multiuser state
The operating state of the 382 computer that allows more than one person to use the computer
simultaneously. Also called "run level 2."
NI
Network Interface - A local Network Interface card that allows interconnection of computers.
NVRAM
Nonvolatile Random Access Memory - A type of Random Access Memory (RAM) used to save
essential information that would otherwise be lost when power is removed.
off-line diagnostics
Diagnostics that are performed in the firmware mode when the operating system is not active.
operating state
An "environment" (defined internally by the computer) in which the computer must be running for
specified functions to be performed. The 382 computer has seven operating states (0 through 6):
powerdown state (0), single-user state (1), multiuser state (2), two unassigned states (3 and 4),
firmware state (5), and reboot state (6). Also called "run levels."
operating system
Software that controls the execution of programs. An operating system may provide services such as
resource allocation scheduling, input/output control, and data management.
parallel
More than one bit at a time.
password
Passwords are encrypted strings of characters that a user must enter to identify himself or herself to
the computer. Passwords can be any mixture of numbers, special characters, or alpha characters
(uppercase or lowercase).
peripheral devices
Devices such as terminals, printers, or modems that can be connected to a computer.
port
The architectural term for a connection between a computer and an input/output device (such as a
terminal) through which data is transferred. The physical connection between the computer and
another device is made through a modular jack on the computer.
PORTS feature
Peripheral Ports Controller - A feature card and associated software that provides four RS-232-C
serial ports and one parallel port which support peripheral devices such as terminals, modems, and
serial printers.
PROM
Programmable Read Only - A type of Read Only Memory (ROM) that can be programmed.
prompt
A symbol (or a string of letters and/or numbers) that the computer displays on the terminal screen as
a signal that it is waiting for input (such as a login or a command) from you. The $ is the UNIX
system shell default prompt.
queue
A list of the processes and/or data (in sequential order) that are being saved for processing.
RAM
Random Access Memory - A type of memory in which you can directly access any location in
memory.
G-4 OFF-LINE DIAGNOSTIC MANUAL