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WorksheetsTerm 2 Break _ Revision Binary
Total questions: 30
Worksheet time: 25mins
Name
Class
Date
1.
Convert 128 to binary
a)
10000000
b)
01111110
c)
10000001
d)
11001100
2.
Convert 11111111 to decimal
a)
255
b)
245
c)
235
d)
225
3.
What are the only two numbers you can use in binary?
a)
0 and 1
b)
1 and 2
c)
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
d)
1, 2, 4, 8, 16
4.
Which of these are the correct place values for binary?
a)
128,64,32,16,8,4,2,1
b)
128, 68,34,12,6,4,2,1
c)
1,0
d)
0,1
5.
How would you write the number two in binary?
a)
1001
b)
0001
c)
0000
d)
0010
6.
Computers can only understand 0s and 1s.
a)
True
b)
False
7.
Convert this to a decimal number
a)
13
b)
12
c)
10
d)
8
8.
Convert 20 to an binary byte of data:
a)
00010001
b)
00010010
c)
00011000
d)
00010100
9.
A group of 8 bits is known as a gigabyte.
a)
True
b)
False
10.
What are the different types of data a computer stores?
a)
Images and Videos
b)
Games and Animations
c)
Words and Numbers
d)
All of these are data
11.
What is 4 in binary?
a)
0100
b)
0001
c)
0101
d)
1100
12.
Binary is:
a)
a system using the digits 0 and 1 to represent a letter, digit, or other character in a computer or other electronic device.
b)
the most common format for text files in computers and on the Internet
13.
ASCII was developed in what decade?
a)
1950s
b)
1960s
c)
1970s
d)
1940s
14.
ASCII is pronounced:
a)
Ask-ee
b)
A-skee
c)
A-skews-me
15.
What is 12 in binary?
HINT: It has an 8 and a 4 in it!
HINT: It has an 8 and a 4 in it!
a)
12
b)
11
c)
1100
d)
1011
16.
What is a binary digit referred to as?
a)
Bit
b)
Bits
c)
Byte
d)
Bytes
17.
8 bytes = 1 bit
a)
TRUE
b)
FALSE
18.
Including black and white, how many different colours did Keira use
a)
2
b)
3
c)
5
d)
6
19.
Each little dot that makes up the picture is called
a)
a pixel
b)
a dimension
c)
a McChicken Nugget
20.
1 represents which colour
a)
black
b)
white
21.
how many numbers are needed for each pixel
a)
0
b)
1
c)
2
d)
3
22.
Colour depth means
a)
the difference in brightness between objects or regions
b)
the relationship between picture width and its height.
the relationship between picture width and its height.
c)
the overall lightness or darkness
d)
the number of bits used for each colour of a single pixel.
23.
Which does not affect playback quality of a sound file?
a)
Amplitude
b)
Bit rate
c)
Sample frequency
d)
Sample resolution
24.
How does increasing colour depth affect an image file?
a)
Increases number of colours in image
b)
Increases resolution of image
c)
Increases image width
d)
Decreases metadata for an image
25.
Compression helps when sending files over the Internet because...
a)
Less packets have to be sent so it is quicker
b)
Lossy compression is better
c)
Routers can recognise zipped files
d)
Lossless compression is better
26.
Digital sound always sounds better than analogue.
a)
False
b)
True
27.
A microphone converts the changes in air pressure into voltage changes which are then digitised.
a)
True
b)
False
28.
Sampling rate for CDs is different from the one used by DVDs.
a)
True
b)
False
29.
What is real life sound known as?
a)
Analogue Sound
b)
Digital Sound
30.
How is sound stored on a computer
a)
Digital
b)
Analogue
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