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Comp ch 8

STUDY
PLAY
Anti-Spyware Software
spyware keeps track of computer use and often share information to users. this helps prevent them from entering your system
Anti-Virus Software
attempts to keep a system free of computer viruses and malware. by scanning the system for files that match a known virus
BIOS (Basic Input Output System)
firmware located on the motherboard that instructs the processor how to power up the computer and locate the operating system
Booting
process of starting up a computer
Device Driver
small program that interfaces with an operating system to tell it how to use a particular piece of hardware
Diagnostic Utility
scans computer and compiles a report indicating hardware configuration and all system settings (helpful when trying to find and solve problems on a computer)
Embedded OS
designed to work on limited hardware such as in cell phones
EX: Windows CE, Windows Mobile, Palm OS, Symbian
Encryption
process of converting data into an incomprehensible format that can only be decoded by those who know the correct key
File Manager
utility program that comes with most OS's that allow one to browse, copy, paste, move, delete, and work with files
Network OS
designed to be used within a network and much of its functionality is focused on being online. Most used to provide services and to manage over a network
Operating System (OS)
interface between the hardware, user, and application programs. responsible for coordinating most activities of a computer and for managing shared resources
Page
name given to the fundamental measurement of how much memory has been swapped to the hard disk when using virtual memory. the OS swaps memory to and from hard disk in whole pages
Platform
indicates a combination of hardware along with the operating system that supports it
Plug and Play
a device that an operating system automatically recognizes and installs the correct driver for
POST (Power-On Self-Test)
collection of tests that are run by the BIOS at boot time in order to determine what resources that computer has available and which are working correctly
Queue
data structure that stores incoming elements so the first one removed is the first one to arrive - used to regulate the usage of various hardware resources in the computer
Spooling
process of queuing up jobs to be output on a printer
Stand-Alone OS
designed so that it can function on its own without connecting to a network
Stand-Alone Utility Program
used to indicate any utility program that comes separate from the operating system
Swap File
location on the hard disk used to store elements that have been swapped out of RAM memory by an OS that supports virtual memory
Thrashing
occurs when the OS spends much of its time paging (virtual memory) instead of executing applications
UNIX
computer operating system that was very popular in colleges and was one of the earliest multi-tasking operating systems - given rise to many modern systems such as Solaris and Linxus