1.2

Question 1

ram

Answer 1

random access memory

Question 2

rom

Answer 2

read only memory

Question 3

purpose of primary memory

Answer 3

storing data and instructions

Question 4

purpose of rom

Answer 4

stores startup programs

Question 5

post

Answer 5

checks components working

Question 6

bios

Answer 6

program to view/change system settings

Question 7

boot loader

Answer 7

searches for and loads os

Question 8

rom characteristics (4)

Answer 8

stores startup program instructions
read only unerasable content
non volatile do not need power to retain info
small capacity

Question 9

purpose of ram

Answer 9

stores instructions and data that are in use

Question 10

ram characteristic

Answer 10

volatile

Question 11

virtual memory purpose

Answer 11

allows a computer to run more programs than primary memory can store

Question 12

2 virtual memory disadvantages

Answer 12

disk thrashing

slow computer speed

Question 13

secondary storage purpose

Answer 13

stores a long term permanent copy of data

Question 14

magnetic example

Answer 14

hdd

Question 15

optical

Answer 15

cd

Question 16

solid state

Answer 16

ssd or usb

Question 17

how optical storage works

Answer 17

laser reads pits and lands

Question 18

(dis)advantages of optical

Answer 18

portable
cheap
slow
low capacity
easy to damage

Question 19

(dis)advantages of magnetic

Answer 19

cheap
high capacity
heavier
can be broke by dropping etc.

Question 20

(dis)advantages of solid state

Answer 20

fast
light
no moving parts (fast)
hard to break
expensive

Question 21

compression defined and purpose

Answer 21

removing data from a file

reduces storage space and bandwidth needed

Question 22

lossy compression (dis)advantages

Answer 22

data lost forever
bad quality if too compressed
reduces bandwidth and storage size (adv)

Question 23

lossless compression (dis)advantages

Answer 23

best quality

doesnt save as much space etc.