Chapter 9 SAM Flashcards
CAPTCHA
A system that verifies that user input is not computer- generated by having you type in distorted characters that appear on the screen
username
Often used in combination with a password to gain entry to a computer system
encryption
Technique used to scramble or code data that is transmitted over a network
firewall
Creates a blockade between a corporate or personal network and the internet
muliprocessing
Processing technique an operating system can use if the computer has many processors
multithreading
A processing technique an operating system uses as additional RAM
memory management
A key task that operating systems perform to use RAM efficiently
virtual memory
Part of the hard drive that the operating system uses as additional RAM
parallel processing
A processing technique an operating system uses to divide one task among many processors
resource
A component the OS requires to perform work
buffer
What an OS uses to hold data from one device in memory before transferring the data to another device
power-on-self-test (POST)
A test the computer performs during the boot process to check crucial system components
kernel
The core of an OS
device driver
A small program that tells the OS how to interact with a hardware resouces
Notification area
shows date, time, and includes buttons to access options for sound, touch keyboard, and more.
