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Using Hexadecimal to represent numbers

Quiz by GCSE Computer Science Teacher 2

GCSE (AQA)
Computer Science
English National Curriculum

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12 questions
Show answers
  • Q1
    What is the base system for Hexadecimal?
    Base 2
    Base 16
    Base 10
    Base 8
    30s
    3.3.2.b
  • Q2
    What does the term base 16 refer to?
    The number that hex counts up until, 0 - 16
    The number of combinations that hex can hold
    The number if items that can be represented using Hex
    The number of characters that the hex system uses, 0-9 and A - F
    30s
    3.3.2.b
  • Q3
    One hex digit is equivalent to a __ bit binary sequence?
    4
    2
    8
    1
    30s
    3.3.2.b
  • Q4
    Why is the hexadecimal system used?
    To complicate binary codes
    So humans can not de-crypt binary
    To simplify binary codes
    For computers to read easier
    30s
    3.3.2.b
  • Q5
    What is a popular use of the hexadecimal system?
    Writing programs
    Colour references
    Shorthand for words
    Programming network
    30s
    3.3.2.b
  • Q6
    Why is hexadecimal used to represent colour references?
    It is easier to and shorter to store hex over binary
    Because colours do not have a binary value
    To make it harder to understand
    To take up more space
    30s
    3.3.2.b
  • Q7
    What colour does #000000 represent?
    Red
    Black
    Blue
    White
    45s
    3.3.2.b
  • Q8
    What is the first step in converting a hex number to its binary equivalent?
    The value must be multiplied by 8
    The value must be first converted to denary
    The value needs to be divided by 2
    You must multiply the number by 16
    30s
    3.3.2.b
  • Q9
    What is the first step when converting a hex number to denary?
    You need to add the hex digits together
    You must separate the hex digits
    You convert the two digits together
    You need to shift the digits by 8
    30s
    3.3.2.b
  • Q10
    What is the value for 255 in hex?
    GG
    AA
    FF
    EE
    30s
    3.3.2.b
  • Q11
    What in the maximum number that can be represented by 2 Hex characters?
    510
    128
    16
    255
    30s
    3.3.2.b
  • Q12
    What is the maximum number than can be represented by 1 hex character?
    16
    2
    4
    8
    30s
    3.3.2.b

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