WorksheetsY10 Data Representation Homework
Total questions: 18
Worksheet time: 13mins
Name
Class
Date
1.
What is metadata
a)
It is very large data
b)
It is the data that is stored with every file which gives information about the file
c)
It is data that is compressed
2.
What is Image Resolution?
a)
The number of pixels per inch
b)
how a picture appears on the screen
c)
How clear a picture is
3.
What Metadata is stored with an Image File?
a)
image size, bit depth (colour type), date/time, location, camera type, camera settings
b)
Sampling rate, bit depth, metadata
c)
Colour, resolution, who took the picture
4.
How many colours do we get from 2 bits
a)
2 colours
b)
4 colours
c)
8 colours
d)
24 colours
5.
How many colours do we get from 3 bits?
a)
2 colours
b)
4 colours
c)
8 colours
d)
24 colours
6.
how many colours do we get from 4 bits
a)
2
b)
4
c)
8
d)
16
7.
Which file-type has the largest file size?
a)
JPEG
b)
PNG
c)
GIF
d)
BMP
8.
The colour of a pixel can be stored as a _______ number
a)
Unicode
b)
Hex
c)
Binary
d)
ASCII
9.
Each pixel is displayed using a combination of what three colours?
a)
Blue, green and purple
b)
Red, grey and white
c)
Red, green and blue
d)
White, red and blue
10.
Which of the following is NOT metadata that could be stored about an image?
a)
Pixel width and height.
b)
Picture resolution measured in DPI
c)
Camera name and model.
d)
Printer description
11.
Convert 7A Hexadecimal to Binary.
a)
01111010
b)
01111000
c)
01110100
d)
01110010
12.
Convert 9C to Denary.
a)
155
b)
156
c)
157
d)
158
13.
Binary is a base two number system. What does this mean?
a)
That there are 10 possible states (0-9)
b)
That there are 16 possible states (0-9 and A-F)
c)
That there are 2 possible states (0 or 1)
d)
That the computer can only understand letters
14.
What is a nibble?
a)
Half a bye (4 bits)
b)
8 bits
c)
1 bit
d)
Something to eat
15.
If a PS4 has a storage capacity of 500GB, and each game is 50GB, how many games can be stored on the PS4's hard drive?
a)
1
b)
5
c)
10
d)
15
16.
An image with a higher resolution means a better quality image. True or false?
a)
True
b)
False
17.
Convert 128 to binary
a)
10000000
b)
01111110
c)
10000001
d)
11001100
18.
Which of these is the correct sequence for the place values for binary numbers?
a)
1, 2, 4, 8, 16, 32, 64, 128
b)
1, 2, 4, 6, 8, 10, 12, 14, 16
c)
1, 2, 3, 4, 5, 6, 7, 8
d)
0, 1
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