1.1.3

Question 1

What is an input device?(1)

Answer 1

A device that can accept data from user to computer.

Question 2

What is an output device?(1)

Answer 2

Device that transmits data to user from computer

Question 3

GIve 3 examples of an input device (3)

Answer 3

Any 3 input devices (i.e Keyboard-Webcam-Barcode readers etc.)

Question 4

GIve 3 examples of an output device (3)

Answer 4

Any 3 output devices (i.e Speakers-Printers-Projectors etc.)

Question 5

What kind of device is a touch screen?(2)

Answer 5

Both an input and an output device.

Question 6

Give 4 performance factors for both input and output devices.(4)

Answer 6

Speed/Accuracy/Cost/Relevance to task.

Question 7

What is used to read from and write to optical devices?(1)

Answer 7

Lasers

Question 8

How is binary information represented in optical devices?(4)

Answer 8

Pits and Lands;Pit represents 0 and Land represents 1.

Question 9

What are 3 types of optical devices?(3)

Answer 9

CD/DVD/Blu-Ray

Question 10

Which out of CD/DVD/Blu-Ray has a higher storage capacity?(1)

Answer 10

Blu-Ray

Question 11

How is binary information represented in magnetic devices?(2)

Answer 11

2 magnetic states;1 polarised and 1 unpolarised.

Question 12

What is the most common type of magnetic storage device?(1)

Answer 12

Hard disk drive

Question 13

How is binary information stored in Flash storage devices?

Answer 13

Logic gates are used to store electrical charge in one of two states:high or low (1 or 0)

Question 14

Is flash storage volatile or non-volatile?(1)

Answer 14

Non-volatile

Question 15

What does non-volatile storage mean?(1)

Answer 15

Storage that can be retained after powering computer down

Question 16

Give one advantage and one disadvantage of Solid State Drives compared to HDD (2)

Answer 16

Advantages: any from light and portable/no moving parts/more durable/higher data transfer rates Disadvantages: any from cost/limited lifespan

Question 17

What are the 2 types of primary storage?(2)

Answer 17

RAM and ROM

Question 18

What does RAM stand for?(1)

Answer 18

Random Access Memory

Question 19

What does ROM stand for?(1)

Answer 19

Read Only Memory

Question 20

What is the RAM used for?(1)

Answer 20

Used to store data and programs that the computer is currently using

Question 21

What is the ROM used for?(1)

Answer 21

Useful for storing fixed sequences of instructions like a computer’s startup

Question 22

Is the RAM volatile or non-volatile?(1)

Answer 22

Volatile

Question 23

Is the ROM volatile or non-volatile?(1)

Answer 23

Non-volatile

Question 24

ROM cannot be modified. True or False?(1)

Answer 24

TRUE

Question 25

What is virtual storage?(2)

Answer 25

Storage that stores information remotely so that it can be accessed by any

Question 26

What is a disadvantage of virtual storage?(1)

Answer 26

Cost or limitation of user’s network speed.