1.1.3 Input Output devices Flashcards

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1
Q

Give 2 examples of optical storage devices?

A

CD-ROM devices
DVD devices

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2
Q

Give 2 examples of magnetic storage?

A

magnetic tape
hard-disk drives

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3
Q

Give 2 examples of flash storage?

A

Solid State Drives (SSDs)
USB Flash Drives

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4
Q

How do optical drives store data?

A

As grooves and pits

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5
Q

How do optical drives work?

A

By shining a laser at the media and processing the reflection of the media

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6
Q

Name 2 advantages of optical storage devices?

A

Cheap per GB
Portable

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7
Q

Name 2 disadvantages of optical storage devices?

A

Slow to access times
Prone to scratches

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8
Q

How do magnetic drives store data ?

A

store information magnetically represent binary information using two magnetic states: polarised and unpolarised.

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9
Q

How do magnetic drives work?

A

By having a magnetic drive head physically move over the surface of the disk .

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10
Q

Name 2 advantages of magnetic drives devices?

A

Cheap per GB
Large capacity

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11
Q

Name 2 disadvantages of magnetic drives devices?

A

Slow access times
Fragile

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12
Q

How do flash drives store data ?

A

In memory chips

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13
Q

Name 2 advantages of flash drive ?

A

Durable
Fast access times

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14
Q

Name 2 disadvantages of flash drives ?

A

Cost per GB
Limited read/writes

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15
Q

What does ROM stand for?

A

Read Only Memory

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16
Q

Name 3 features of ROM?

A

A small piece of ROM is located on the motherboard
Non volatile
Contains the bootstrap (first instructions for computer)

17
Q

What does RAM stand for?

A

Random Access Memory

18
Q

Name 3 features of RAM?

A

Holds information being being executed by the processor
Volatile
Faster than the hard disk

19
Q

What does POST stand for?

A

Power On Self Test

20
Q

Where is POST stored?

A

ROM

21
Q

What are the 2 steps does POST do?

A

POST sends signals to all the connected components, wakes them up and makes the CPU aware of their existence

The operating system is loaded from the hard drive to RAM

22
Q

What is virtual storage?

A

Virtual Storage is the concept of storing and receiving data over the internet in the cloud instead of a local storage device

23
Q

Name 3 advantages of virtual storage?

A

Data can be accessed at any time from any device as long as there is an internet connection
Data can easily be shared without the need for removable media
It is easy to collabarate

24
Q

Name 3 advantages of virtual storage?

A

Data can be accessed at any time from any device as long as there is an internet connection
Data can easily be shared without the need for removable media
It is easy to collaborate

25
Q

Name 3 disadvantages of virtual storage?

A

Expensive
No internet connection means no access to files
Lack of control over the data