CAT theory

Question 1

compressed files are often referred to as…

Answer 1

zipped files

Question 2

An example of compression software

Answer 2

WinZip

Question 3

name one advantage of compressed files

Answer 3

They take up less space

Question 4

name three advantage laser printers have over inkjet printers

Answer 4

1.quality: High quality print outs
2.speed: can print more than one page at a time
3.cost: replacing toner in cheaper

Question 5

what is the difference between inkjet and laser printer?

Answer 5

Inkjet printers operate by using cartridges that contain ink, while laser printers work by using toner

Question 6

types of storages devices

Answer 6

1. Internal hard drive
2. External hard drive
3. SD card
4. SSD
5. flash drive

Question 7

what are peripheral devices?

Answer 7

a peripheral device is an external device that is connected to a computer, such as a mouse or keyboard

Question 8

what does a VGA port do?

Answer 8

connects monitors and data projectors

Question 9

what does a DVI port do?

Answer 9

connects display devices

Question 10

what does a HDMI port do?

Answer 10

connects monitors, data projectors, and gaming consoles

Question 11

what does file properties refer to

Answer 11

meta data

Question 12

definition of file properties

Answer 12

the file properties window shows you a ranges of information such as its file type, size, author, title as well as when last it was changed

Question 13

what term describes stealing ideas as your own?

Answer 13

plagiarism

Question 14

what is the difference between application and system software?

Answer 14

application software allows you to perform tasks, such playing games or creating a slideshow, while system software control and manage the operation of the computer

Question 15

what are the functions of an OP

Answer 15

1.maaging all hardware and software
2. maintaining security
3. providing a user interface

Question 16

what does GUI stand for

Answer 16

graphical user interface

Question 17

what does a GUI allow you to do

Answer 17

a GUI allows you click buttons with your mouse and types text on your keyboard, whist showing everything clearly as graphics and text on your display

Question 18

user authentication

Answer 18

1. fingerprint scanning
2. facial recognition scanner

Question 19

the difference between storage and memory

Answer 19

memory is volatile, meaning memory only keeps its data while the computer is still on. Software keeps all its data even when the computer is turned off, making it non-volatile

Question 20

Why is it important to update your software?

Answer 20

making sure your software is up to date is important so that you can get all the newest fixes for bugs in the software, the most recent virus and malware fixes and also the latest features

Question 21

what can you do to ensure low consumption of power by computers?

Answer 21

1. adjusting the brightness
2. Investing in hardware that helps consume less power

Question 22

how can you prevent hardware theft?

Answer 22

1. using cable locks
2. use lockable cages or boxes
3. investing is lockable docking stations for laptops

Question 23

what does RSI refer to?

Answer 23

repetitive strain injury

Question 24

how can you prevent RSI?

Answer 24

1.by investing in ergonomically designed hardware
2. taking regular break
3. have proper posture

Question 25

what are touchscreens?

Answer 25

touchscreens are devices that allow you to interact with your computer in amore natural way