Secondary Storage

Question 1

solid state storage

Answer 1

-collection of circuts wired together to store binary data
-no moving pARTS

-durable
-fast read and write speeds
-silent when running and require less power

Question 2

downsides of solid state

Answer 2

typically expensive
lower capacity of magnetic storage
can be unreliable - read write limit due to heat

Question 3

optical storage

Answer 3

uses light to read and store data
laser burns marks into the reflective surface of the disk
marks are called pits and gaps are called lands

Question 4

how does optical storage work

Answer 4

-discs spin and the laser burns pits onto reflective surface
-to read data, laser is set to a low power and shone on the disc
-a light sensor reads the light that is reflected
-pits do not reflect light (0) but lands do (1)

Question 5

3 formats of optical storage

Answer 5

rom
write once R
rewritable

Question 6

benefits and drawbacks of optical storage

Answer 6

cheap
portable
reliable

slow read speeds
limitefd resusability

Question 7

magnetic storage

Answer 7

adv
-high capacity reuseable
cheap
faster speeds

disadv
damaged if dropped
slower read speeds than solid state
require a lot of power

Question 8

cloud storage

Answer 8

online storage service
access files via the internet

Question 9

benefits

Answer 9

capacity can expand as you need
files can be accessed anywhere in the world
sharing files is easier enabling collaboration
increased storage backups are easier to arrange
no staff required
cheap/free

Question 10

disadvs

Answer 10

-relies on internet connection
-requires stable connection bandwidth
-vulnerable to hackers
-cost and ownership
-can be slow