Users Guide

Glossary 185
NTFS
Abbreviation for the Windows NT File System option in the Windows NT
operating system. NTFS is an advanced file system designed for use specifically
within the Windows NT operating system. It supports file system recovery,
extremely large storage media, and long file names. It also supports object-oriented
applications by treating all files as objects with user-defined and system-defined
attributes. See also FAT and FAT32.
NTLM
Abbreviation for Windows NT LAN Manager. NTLM is the security protocol for
the Windows NT operating system.
NuBus
Proprietary expansion bus used on Apple Macintosh personal computers.
NVRAM
Acronym for nonvolatile random-access memory. Memory that does not lose its
contents when you turn off your system. NVRAM is used for maintaining the
date, time, and system configuration information.
OID
Abbreviation for object identifier. An implementation-specific integer or pointer
that uniquely identifies an object.
online access service
A service that typically provides access to the Internet, e-mail, bulletin boards,
chat rooms, and file libraries.
OTP
Abbreviation for one-time programmable.
OSWDT
Abbreviation for Operating System Watch Dog Timer. A watch dog timer is a
computer hardware timing device that triggers a system reset, if the operating
system is not responding.
PAM
Acronym for Pluggable Authentication Modules. PAM allows system
administrators to set an authentication policy without having to recompile
authentication programs.