Sotrage devices

Question 1

what does ROM contain

Answer 1

computer bootup instructions

this is why ROM non volatile - these instructions needed to boot up the computer

Question 2

virtual mem

Answer 2

part of hard drive used as extension to RAM

Question 3

magnetic disks

Answer 3

have concentric tracks
the disk spins at high speeds - 3600-7200 rpm, each spinning platter read by drive head

Question 4

pros hard disks

Answer 4

fast read write speeds
relatively cheap storage per TB

Question 5

SSDs - what they use

Answer 5

electrically programmable non volatile flash mem

Question 6

advantages/disadvantages solid state media

Answer 6

avantgae:
more durable
faster than hard drive
less pwr consumption
more portable

disavantage:
less capacity than hard drive
more expensive than hard drive

Question 7

USBs

Answer 7

have up to 128gb storage
cheap
can use password protection
useful for transferring data

Question 8

CD formats

Answer 8

CD-ROM
CD-R
CD RW

Question 9

CD ROM

Answer 9

read only

data pressed at time of manufacture

Question 10

CD-R

Answer 10

written to once only

Question 11

CD-RW

Answer 11

can be written to, read and erased and written again multiple times

Question 12

uses of CD rom

Answer 12

software distribution

Question 13

uses CD-R

Answer 13

copying a game, software, audio/video file, document

can be stored offline

Question 14

uses CD-RW

Answer 14

short/medium term backup storage

or transferring files one comp to another

Question 15

DVD and Blu-Ray

Answer 15

high capacity discs than can store films