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WorksheetsData Representation Mini Test
Total questions: 20
Worksheet time: 19mins
Name
Class
Date
1.
What is the max number of combinations you can make out of 4 bits?
a)
8
b)
10
c)
12
d)
16
2.
Convert 11001001 to Denary (decimal).
a)
199
b)
200
c)
201
d)
202
3.
Convert 7A Hexadecimal to Binary.
a)
01111010
b)
01111000
c)
01110100
d)
01110010
4.
Convert 9C to Denary (decimal).
a)
155
b)
156
c)
157
d)
158
5.
What is the smallest unit of data in binary?
a)
A nibble
b)
A byte
c)
A bit
d)
A letter
6.
Add the two binary numbers: 11110000 + 00001001
a)
11111001
b)
00110101
c)
11001011
d)
00100111
7.
What problem occurs in binary addition, when the result is more than what the CPU is capable of processing?
a)
overpour
b)
overgo
c)
overflow
d)
overmove
8.
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
9.
Why do computers use binary?
a)
It is easier to deal with only two states (0 or 1)
b)
It is easier to understand
10.
How many bits are in a byte?
a)
2
b)
0
c)
8
d)
4
11.
What is a nibble?
a)
Half a byte (4 bits)
b)
8 bits
c)
1 bit
d)
Something to eat
12.
What is the denary (decimal) value?
a)
59
b)
64
c)
160
d)
192
13.
Convert the denary (decimal) value 112 into an 8-bit binary number
a)
01110000
b)
11000000
c)
10110000
d)
00110011
14.
What is the largest binary number value you can represent with 8 bits?
a)
64
b)
128
c)
200
d)
255
15.
What is 184 in hexadecimal?
a)
B8
b)
B4
c)
10111000
d)
9A
16.
What is the 10110111 in Hex?
a)
B7
b)
A7
c)
183
d)
7A
17.
Denary (decimal) numbers are base...
a)
2
b)
4
c)
8
d)
10
18.
Why do programmers use hexadecimal?
a)
To avoid very large and confusing binary numbers
b)
To prevent the computer decoding binary numbers
c)
To avoid small binary numbers
d)
Because they felt that binary was too simple.
19.
The biggest binary number value you can make with 4 binary digits is _____
a)
15
b)
14
c)
13
d)
16
20.
What is the hexadecimal number FF in denary (decimal)?
a)
255
b)
256
c)
254
d)
257
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