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GCSE Computer Science (Binary) Quiz on Binary, created by Levnt on 23/05/2016.

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Binary

Question 1 of 10

1

What is a signed integer?

Select one or more of the following:

  • An integer that can be a either a negative or positive number

  • An integer that is converted into binary

  • An integer that can be processed by the CPU

Explanation

Question 2 of 10

1

What is a floating point number?

Select one or more of the following:

  • A number that has no fixed value

  • A number that has a decimal point

  • A number that has had an operation carried out on it in the ALU

Explanation

Question 3 of 10

1

Why does ipv6 allow more IP addresses than ipv4?

Select one or more of the following:

  • ipv6 uses six binary numbers but ipv4 only uses four

  • ipv6 addresses are 128-bit and ipv4 addresses are 32-bit

  • ipv6 can do binary calculations faster than ipv4

Explanation

Question 4 of 10

1

What is -6 in binary converted using two's complement?

Select one or more of the following:

  • 1010

  • 1011

  • 0010

Explanation

Question 5 of 10

1

What is three in binary converted using two's complement?

Select one or more of the following:

  • 0100

  • 0111

  • 0011

Explanation

Question 6 of 10

1

What is the result of 9+8 in binary if processed in a system which only supports 4-bit numbers?

Select one or more of the following:

  • 0011

  • 0001

  • 10001

Explanation

Question 7 of 10

1

How could the number -5 be represented using 8-bit binary sign and magnitude?

Select one or more of the following:

  • 00000101

  • 100000101

  • 10000101

Explanation

Question 8 of 10

1

What is the result of this binary addition: 0110 + 0101 ?

Select one or more of the following:

  • 1011

  • 1111

  • 0111

Explanation

Question 9 of 10

1

What is the largest unsigned base 10 integer value that 7 bits can be used to represent?

Select one or more of the following:

  • 256

  • 127

  • 255

Explanation

Question 10 of 10

1

When does overflow happen?

Select one or more of the following:

  • When the pattern of bits is too large to be represented by the number of bits available in a register

  • When a machine code program crashes

  • When two binary numbers are successfully added together

Explanation

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