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Term 04 Data Rep Roundup

Total questions: 50

Worksheet time: 32mins

Name
Class
Date
1.

Convert 3 to binary

a)

10000001

b)

01111110

c)

00000011

d)

11001100

2.
A bitmap image is made up of
a)
Pixels
b)
Colours
c)
Sounds
d)
Samples
e)
Characters
3.
Increasing the colour depth means…
a)
A bigger range of colours can be used for each pixel
b)
More pixels are in the image.
c)
More colours are in the image.
d)
Darker colours
4.
What would be the colour depth of an image which can use up to 256 colours?
a)
256 bit
b)
8 bit
c)
8 byte
d)
256 byte
5.
The following is true about character sets:
a)
Each letter has a unique code
b)
Lower and upper case letters share the same codes
c)
ASCII is one of the latest character sets to be adopted
6.
What is this an example of?
a)
Overflow error
b)
8 bit binary addition
7.

The number of bits available to store data inside each sample

a)

Sample Rate

b)

Bit Rate

8.
The number of samples taken at each fixed interval
a)
Bit Rate
b)
Sample rate
9.
What is meant by the resolution of an image?
a)
The number of pixels in an image
b)
The number of bits each pixel can use to store colour data
10.

How many bytes are in a kilobyte?

a)

1024

b)

100

c)

1234

d)

128

11.

How many bits was used to encode the original ASCII character set?

a)

7

b)

8

c)

16

d)

4

12.

ASCII stands for...

a)

American Standard Code for Information Interchange

b)

Authentic Style Code for Information Interchange

c)

American System Control for Information Interchange

d)

Authentic System Coding for Information Interchange

13.

ASCII can represent an emoji

a)

True

b)

False

14.
What is a pixel?
a)
Picture element - the small dots that make up an image.
b)
How an image is stored on the computer.
c)
A type of image
d)
A special type of photograph
15.

What will the circuit's output be?

a)

1

b)

0

16.

Is 'real' sound analogue or digital?

a)

Analogue

b)

Digital

17.

Define what is meant by 'sampling'

a)

Height of the wave is measured, at intervals and stored as binary.

b)

The number of samples taken each second

c)

 The number of bits used per second of audio

d)

The amount of information required to describe one second of a sound.

18.
What is meant by the term 'colour depth'?
a)
Width and height of an image.
b)
A pixel in an image.
c)
Quality of the colour.
d)
Number of bits used to encode each pixel.
19.
How many colours do we get from 2 bits
a)
2 colours
b)
4 colours
c)
8 colours
d)
24 colours
20.
The smallest unit of data stored in an image file is called:
a)
Pixels
b)
Resolution
c)
Alpha
d)
Bitmap.
21.
What does 'resolution' mean?
a)
Something you listen to on a computer.
b)
The posh name for the keys on your keyboard.
c)
The number of pixels that make up a screen horizontally and vertically.
d)
Solving an argument.
22.
Choose the best answer about character sets:
a)
All characters in character sets are stored in binary.
b)
Some characters in character sets are stored in binary.
c)
Only binary characters in character sets are stored in binary.
23.
The following is true about character sets:
a)
Each letter has a unique code
b)
Lower and upper case letters share the same codes
c)
ASCII is one of the latest character sets to be adopted
24.
Unicode can represent:
a)
65,536 different characters
b)
255 characters
c)
127 characters
25.

How many bits are used to represent each character in the ASCII character set?

a)

5

b)

6

c)

7

d)

8

26.
Convert 128 to binary
a)
10000000
b)
01111110
c)
10000001
d)
11001100
27.
A gigabyte consists of 1024:
a)
megabytes
b)
terabytes
c)
kilobytes
d)
nibbles
28.

Bitmap Colour Depth is

a)

the colour of each pixel.

b)

the density of pixels in an image.

c)

information stored in an image to help recreate the image.

d)

the number of bits used for each pixel.

29.

How many bits was used to encode the original ASCII character set?

a)

7

b)

8

c)

16

d)

4

30.

What does the following program display?

a)

1,2,3,4

b)

1,2,3,4,5

c)

counter,counter,counter,counter,counter

d)

0,1,2,3,4,5

31.

When do you know when you come to the end of the loop?

a)

Its states End loop

b)

The command End is given

c)

The indentation stops

32.

Which data type is used to store whole numbers in Python?

a)

float

b)

str

c)

bool

d)

int

33.
The number of samples taken at each fixed interval
a)
Bit Rate
b)
Sample rate
34.

How many combinations of binary numbers can you make with a Bit Rate of 4?

a)

2

b)

16

c)

65000

35.
Images can contain a geographical location of where the picture was taken. This is stored in a special area of an image file called:
a)
Metadata
b)
File name.
c)
Compression area.
d)
Alpha-channel.
36.

In a number system like binary, what is the value of each digit called?

a)

Place value

b)

Base

c)

Bargain value

d)

ASDA value

37.

Convert the binary number 1110 to decimal.

a)

3

b)

10

c)

15

d)

14

38.

Convert 64 to binary

a)

10000000

b)

01111110

c)

01000000

d)

11001100

39.
Increasing the colour depth means…
a)
A bigger range of colours can be used for each pixel
b)
More pixels are in the image.
c)
More colours are in the image.
d)
Darker colours
40.
The following is a correct order of units of storage from lowest to highest:
a)
a bit, a nibble, a byte, a kilobyte, a megabyte, a gigabyte, a terabyte
b)
a bit, a byte, a nibble, a kilobyte, a megabyte, a gigabyte, a terabyte
c)
a bit, a nibble, a byte, a megabyte, a kilobyte, a gigabyte, a terabyte
d)
a byte, a bit, a nibble, a megabyte, a kilobyte, a gigabyte, a terabyte
41.
Unicode can represent:
a)
65,536 different characters
b)
255 characters
c)
127 characters
42.

Bitmap Colour Depth is

a)

the colour of each pixel.

b)

the density of pixels in an image.

c)

information stored in an image to help recreate the image.

d)

the number of bits used for each pixel.

43.

How many bits was used to encode the original ASCII character set?

a)

7

b)

8

c)

16

d)

4

44.
What is a pixel?
a)
Picture element - the small dots that make up an image.
b)
How an image is stored on the computer.
c)
A type of image
d)
A special type of photograph
45.
Which is NOT an effect of increasing the resolution in an image?
a)
More colours can be displayed.
b)
More binary will be required to create the image.
c)
Larger file size
d)
Higher quality image
46.

The resolution of an image refers to the quality of the image.

a)

TRUE

b)

FALSE

47.
A byte is
a)
8 bits
b)
4 bits
48.
What is a pixel?
a)
Picture element - the small dots that make up an image.
b)
How an image is stored on the computer.
c)
A type of image
d)
A special type of photograph
49.

What is the output of an OR gate if the inputs are 1 and 0?

a)

0

b)

1

c)

OFF

d)

2

50.

What is the output of an AND gate if the inputs are 1 and 0?

a)

ON

b)

2

c)

1

d)

0

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