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Y8 Spring End of Unit Test

Total questions: 40

Worksheet time: 3hrs 20mins

Name
Class
Date
1.
Convert 128 to binary
a)
10000000
b)
01111110
c)
10000001
d)
11001100
2.
Convert 65 to binary
a)
01100001
b)
00100001
c)
01000001
d)
00100101
3.
Convert 254 to binary
a)
11110000
b)
11111100
c)
11111111
d)
11111110
4.
Convert 37 to binary
a)
00100101
b)
00100011
c)
00100111
d)
01000101
5.

Convert 00010001 to denary

a)
17
b)
27
c)
37
d)
47
6.

Which of these describes a binary bit?

a)

01010101

b)

12563

c)

1 or 0

d)

2 or 3

7.

How many bits make up a nibble?

a)

8

b)

16

c)

4

d)

6

8.

How many bits make up a byte?

a)

16

b)

8

c)

4

d)

2

9.

The binary number system uses___numbers

a)

one

b)

two

c)

three

d)

four

10.

What numbers are used in the binary number system?

a)

0-10

b)

0-15

c)

0-1

d)

0-5

11.

What number system do we use to count in the real world?

a)

Hexadecimal

b)

Denary

c)

Octal

d)

Binary

12.

What are the first 6 powers in binary?

a)

0, 2, 4, 8, 12, 32

b)

1, 2, 4, 8, 16, 31

c)

1, 2, 6, 8, 16, 32

d)

1, 2, 4, 8, 16, 32

13.

In a binary table starting at 1, when we move to the next column on the left, we ____________ the value of the column.

a)

halve

b)

square

c)

double

d)

triple

e)

hash

14.

What does the acronym ASCII stand for?

a)

Associated Standards Council for Internet Information

b)

American Standards Code for Information Interchange

c)

Acronym Studies Corrected for Internet Interference

d)

All Standards Correctly Infer Intelligence

15.
What is the point of binary?
a)
It represents how computers interpret electrical signals
b)
Because we like to make you do extra maths ;-D
c)
For the lulz
d)
Because it describes star systems
16.
A bit is 
a)
a numerical label assigned to each device.
b)
the smallest unit of data in a computer.
c)
a keyboarding term for typing.
d)
is a numeral system made up of 16 symbols.
17.
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
18.

Computers store all data using...

a)

Binary

b)

Hexadecimal

c)

Decimal

d)

Octal

19.

The denary number for a blank space is...?

a)
32
b)
1
c)
2
d)
126
20.
A blank space represented as binary code is...
a)
0010 0000
b)
0000 0001
c)
0000 0010
d)
0111 1111
21.
True or False: The binary number for a capital 'A' is the same as the binary number for a lower-case 'a'?
a)
True
b)
False
22.

Convert this to a denary number

a)
13
b)
12
c)
10
d)
8
23.

Which is larger?

a)

Bit

b)

Byte

24.

ASCII is used to

a)

Represent an image

b)

Give a binary code to a pixel

c)

Give a binary code to a character

d)

Calculate the size of a text file

25.
Upper and lower case letters have a different ASCII code.
a)
True
b)
False
26.

What is the ASCII code for ... A?

a)

65

b)

56

c)

97

d)

79

27.
What is the ASCII code for ... U?
a)
55
b)
85
c)
68
d)
87
28.

What is the following word ... 79 78

a)

OFF

b)

ON

c)

OR

d)

ONE

29.
ASCII is pronounced:
a)

As-qui

b)
A-skee
c)
A-skews-me
30.

How many bits does ASCII use for 1 letter?

a)

8

b)

10

c)

2

d)

1

31.

Which of these is the correct sequence for the place values for binary numbers?

a)

1, 2, 4, 8

b)

1, 2, 4, 6, 8

c)

1, 2, 3, 4,

d)

0, 1

32.
What is the following word ... 67 65 84
a)
CAT
b)
COT
c)
CAR
d)
BAT
33.
What is the following word ... 79 70 70
a)
ON
b)
OFF
c)
OR
d)
ONE
34.

If normal counting is Base 10, Binary is in Base....

a)

Also, Base 10

b)

Base 16

c)

Base 2

d)

Base 1 and 0

35.

Computers use ___________: strings of 0s and 1s to stand for letters, sounds, and all of the other data they handle.

a)

binary code

b)

algorithms

c)

electronic devices

d)

transistors

e)

electric current

36.

Why do computer process data in binary form?

a)

Because it is easier for human beings to understand

b)

Because computers contain circuits with switches which have two states (on and off)

c)

Because computers contain circuits with switches which have multiple states

d)

Because data in decimal form is processed more slowly

37.
A byte is
a)
8 bits
b)
4 bits
38.

Which is the smallest form of data?

a)

Bit

b)

Byte

c)

Nibble

d)

8 Binary Digits

39.

Denary is a base ____ number system

a)

2

b)

10

c)

16

d)

50

40.
Computers use binary because they have circuits which are either on or off, which gives them two states to work from to make calculations and run processes - True or False?
a)
True
b)
False

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