WorksheetsGCSE Year 10 Representation Recap
Total questions: 7
Worksheet time: 4mins
Name
Class
Date
1.
What is result of the boolean expression (A OR B) AND C where A = 1, B=0, C=1?
a)
1
b)
0
c)
Invalid expression
2.
Calculate the file size in bytes of this text file assuming ASCII (8 bit) encoding. "The year 10 CompSci class got this right."
a)
41
b)
328
c)
34
d)
272
3.
What is the number base of the hexadecimal number system?
a)
16
b)
10
c)
2
d)
8
4.
What is A3 base 16 in base 2?
a)
10100010
b)
10100001
c)
10100111
d)
10100011
5.
In binary using up to 8 bits, what is 1111 x 1000?
a)
11110000
b)
1111000
c)
111100
d)
111000
6.
What is a two right binary shift equivalent to?
a)
Subtracting 2 from the number
b)
Dividing the number by 4
c)
Adding 2 to the number
d)
Multiplying the number by 4
7.
Decimal 218 in base 2 is...
a)
10110101
b)
10011011
c)
11011010
d)
11100110
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