Year 7 End of Year Computer Science Test

What is Binary?

• A sequence of 1s and 0s

• The way a computer speaks

• A useless code that is no longer used

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

• Base 10

• Base 2

• Base 9

What kind of number system is used in everyday life?

• Denary

• Binary

• Hexadecimal

What would the denary number 199 be in binary?

• 11000110

• 10100111

• 11000111

What would the denary number 55 be in binary?

• 00110111

• 00101111

• 01010111

What would the denary number 222 be in binary?

• 11010110

• 10111110

• 11011000

What would 10110010 be as a denary number?

• 125

• 32

• 40

• 178

What would 00101110 be as a denary number?

• 46

• 52

• 125

• 33

What would 00100101 + 01000100 be as a binary number?

• 10101001

• 01101001

• 01101011

What is an overflow error?

• When the result of a binary calculation is too long for a computer to process

• When something is spelt incorrectly when programming

• When the computer program has been given the wrong command