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Y8 Computing Test - Phase 1

Total questions: 40

Worksheet time: 32mins

Name
Class
Date
1.

(Intro to Binary)

An electrical circuit that is off, or not lit up, is represented by a

a)

0

b)

1

c)

2

d)

3

2.

(Intro to Binary)

What are the only two numbers you can use in binary?

a)

0 and 1

b)

1 and 2

c)

3 and 4

d)

5 and 6

3.

(Intro to Binary)

What are 8 binary digits called?

a)

Bite

b)

Byte

c)

Bit

d)

Nibble

4.

(Intro to Binary)

What is a single binary digit called?

a)

Bite

b)

Byte

c)

Bit

d)

Nibble

5.

(Intro to Binary)

An electrical circuit that is on, or lit up, is represented by a

a)

0

b)

1

c)

2

d)

3

6.

(Intro to Binary)

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

a)

128,64,32,16,8,4,2,1

b)

1, 2, 4, 6, 8, 10, 12, 14, 16

c)

1, 2, 3, 4, 5, 6, 7, 8

d)

1,2,4,8,16,32,64,128

7.

(Intro to Binary)

What are 4 binary digits called?

a)

Bite

b)

Byte

c)

Bit

d)

Nibble

8.

(Intro to Binary)

In binary, what is 1 + 1?

a)

01

b)

10

c)

2

d)

11

9.

(Intro to Binary)

What is the denary number system?

a)

It counts the number of 0s

b)

Our usual base 10 number system

c)

A special number system for computers

d)

A base 20 number system

10.

(Intro to Binary)

If a binary number ends with a 1, it must be...

a)

An odd number

b)

An even number

c)

A prime number

d)

The number 12

11.

(Intro to Binary)

What kind of data does a computer represent with binary?

a)

numbers

b)

letters

c)

pictures

d)

all of the above

12.

(Intro to Binary)

What kind of 'base' system is binary known as?

a)

Base 12

b)

Base 8

c)

Base 2

d)

Base 10

13.

(Denary to Binary)

Convert 65 to binary

a)

01100001

b)

00100001

c)

01000001

d)

00100101

14.

(Denary to Binary)

Convert 254 to binary

a)

11110000

b)

11111100

c)

11111111

d)

11111110

15.

(Denary to Binary)

Convert 37 to binary

a)

00100101

b)

00100011

c)

00100111

d)

01000101

16.

(Denary to Binary)

Convert 196 to binary

a)

11000110

b)

11100100

c)

11000100

d)

11010100

17.

(Binary to Denary)

Convert 00010001 to denary

a)

17

b)

27

c)

37

d)

47

18.

(Binary to Denary)

Convert 11001100 to denary

a)

224

b)

134

c)

104

d)

204

19.

(Binary to Denary)

Convert 11111111 to denary

a)

255

b)

245

c)

235

d)

225

20.

(Binary to Denary)

Convert 00100100 to denary

a)

26

b)

36

c)

46

d)

56

21.

(ASCII)

The word "Hello" is made up of 5 characters. How many bits is this (hint: how many 1's and 0's are needed to write it)

a)

40

b)

60

c)

80

d)

48

22.

(ASCII)

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

23.

(Binary Addition)

What is the answer to this binary addition?

a)

Overflow error

b)

256

c)

128

d)

512

24.

(Binary Addition)

01100011 + 00111011 =

Answer as a byte

a)

00110011

b)

11001111

c)

00111111

d)

10011110

25.

(Binary Addition)

00100011 + 00011010 =

Answer as a byte

a)

00110011

b)

00001111

c)

01011101

d)

00111100

26.

(Binary Addition)

00111111 + 10101010 =

Answer as a byte

a)

11101001

b)

11001111

c)

00111111

d)

10011110

27.

(Binary Addition)

00000011 + 00000010 =

Answer as a byte

a)

5

b)

00001111

c)

00000111

d)

00000101

28.

(Binary Shifts)

A two place left shift on 00001001

a)

10101110

b)

00000010

c)

00100100

d)

00010010

29.

(Binary Shifts)

A two place right shift on 01001110

a)

00010011

b)

00000010

c)

00100100

d)

00010010

30.

(Binary Images)

The colour of a pixel is stored as a _______ number

a)

Unicode

b)

Hex

c)

Binary

d)

ASCII

31.

(Binary Images)

What is a pixel?

a)

Tiny squares of colour on a screen.

b)

A fairy like creature thatlives in a forest.

c)

A whole picture.

d)

A binary code.

32.

(George Boole)

What is the name of this logic gate?

a)

AND gate

b)

NOT gate

c)

OR gate

d)

NOR gate

33.

(George Boole)

What is the name of this logic gate?

a)

AND gate

b)

NOT gate

c)

OR gate

d)

NOR gate

34.

(George Boole)

What is the name of this logic gate?

a)

AND gate

b)

NOT gate

c)

OR gate

d)

NOR gate

35.

(Alan Turing)

What machine was used during WWII to encrypt and decrypt German messages?

a)

Enigma

b)

Atbash

c)

Secret

d)

Puzzler

36.

(Alan Turing)

What is encryption?

a)

When you turn data / text into code making it difficult to read or understand.

b)

A secret way to type

c)

A formal language designed to communicate instructions to a machine

d)

What is put in, taken in, or operated on by any process or system.

37.

(Charles Babbage)

Charles Babbage designed the Difference Engine and the Analytical Engine. What were these?

a)

Mechanical Computers

b)

Thermometers

c)

Digital Computers

d)

Abacuses

38.

(GJW)

What is the purpose of an operating system?

a)

Manage software on computer

b)

Manage hardware on computer

c)

Manage all hardware & software on computer

d)

Manage the CPU

39.

(GJW)

What operating system is this a symbol of?

a)

Mac OS X

b)

Windows

c)

Linux

d)

IBM

40.

(GJW)

What operating system is this a symbol of?

a)

Mac OS X

b)

Linux

c)

Windows

d)

IBM

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