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WorksheetsBinary Representation
Total questions: 17
Worksheet time: 9mins
Name
Class
Date
1.
Which of following are not normally written as binary numbers?
a)
MAC address
b)
Logic gate inputs
c)
Machine code
2.
Which does not affect playback quality of a sound file?
a)
Amplitude
b)
Bit rate
c)
Sample frequency
d)
Sample resolution
3.
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
4.
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
5.
Convert B2 from hex to denary
a)
178
b)
14
c)
256
d)
10011110
6.
Why is hex easier than decimal when used to represent binary numbers?
a)
Because 16 is a power of 2
b)
Hex is easier to read than decimals
c)
Trick question, it actually isn't
d)
Hex uses numbers AND letters
7.
What would you NOT find in a bitmap file
a)
mathematical expressions to describe the shapes in the image
b)
metadata
c)
code for the colour depth
d)
a series of pixels coded as binary
8.
Why do computers work with binary data?
a)
Electronics with only 2 states are less error prone
b)
Computers can only count to 2
c)
Because binary is what machine code is written in
d)
Because buses are the connections between components
9.
What is the biggest number that can be stored as 8 bits?
a)
255
b)
256
c)
8
d)
16
10.
How many kilobytes are in a gigabyte
a)
1024
b)
210
c)
220
d)
10
11.
Decimal 53 can be written in binary as
a)
110101
b)
110001
c)
111000
d)
111110
12.
In binary, 11 + 11 =
a)
110
b)
111
c)
22
d)
100
13.
The binary number 10001010 expressed in hex is
a)
8A
b)
AA
c)
88
d)
A8
14.
The ASCII code for a letter A is 01000001 what is the code for a C
a)
01000011
b)
01100001
c)
11000011
d)
01001001
15.
Which of these statements about Unicode characters is true?
a)
Normally expressed in 4 bytes
b)
Normally expressed in 8 bits
c)
They were invented by unicorns
d)
They take up less storage space than ASCII codes
16.
The ASCII emoticon for happy is (•‿•)
why are Unicode emoticons so much better?
why are Unicode emoticons so much better?
a)
Unicode has a much bigger character set
b)
Unicode was made for mobile phones
c)
The people who wrote ASCII were old and boring
d)
There is no limit to the amount of symbols you can have in Unicode
17.
Processors could 'think' 10010110 was a datum or an instruction... so how do they know?
a)
The program counter takes them to the next instruction
b)
if it was an instruction it would be in assembly code
c)
RAM only contains instructions
d)
The instructions are in ROM, the data is in RAM.
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