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Binary, hex and decimal numbers
The first part of Unit 3 only.
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Binary numbers are used in computers. Which of the following is True:
1 point
Binary values are used to store both data and instructions
Binary values are used to store only instructions
Binary numbers are used to store only data
Binary numbers use the digits from 0 to 8
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Give the decimal value of the binary bit pattern 00101100
1 point
Your answer
The highest number that can be stored using an 8-bit binary number is:
1 point
256
512
255
8
128
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Convert the decimal number 17 to an 8-bit binary value
1 point
Your answer
A hexadecimal number is written as 2D. What is the decimal value?
1 point
22
32
45
33
21
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Write the hexadecimal number A8 as an 8-bit binary number
1 point
Your answer
Place these values in order, from the lowest (1) to highest (5)
5 points
1 - lowest
2
3
4
5 - highest
4.3 GB
17 bits
1.6 GB
2,659 MB
2 Bytes
1 - lowest
2
3
4
5 - highest
4.3 GB
17 bits
1.6 GB
2,659 MB
2 Bytes
Sam has a file which is 4,300 MB in size. What size is this in GB?
1 point
Your answer
If you apply a logical binary shift of 2 to the LEFT to the binary value 00011100 you get:
1 point
00111000
01110000
11100000
An error
00000111
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The mathematical effect of a logical binary shift of 1 to the LEFT is to do that to the value of the number?
1 point
half it
double it
not change it at all
create an error
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Add together the two binary values shown in the image. Write your answer as an 8-bit binary value.
1 point
Your answer
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