Year 8: Data Representation Spring 1: Homework 3

What is the base number of the hexadecimal system?

• 2

• 8

• 10

• 16

How many bits does each hex digit represent in a binary sequence?

• 2 bits

• 4 bits

• 8 bits

• 16 bits

What is the result of adding the binary numbers 0100 and 0101?

• 1001

• 1010

• 1101

• 1000

Which of the following is an advantage of ASCII over Unicode?

• Uses more bits per character

• Can store a wider range of language characters

• Uses less memory

• Limited to 128 different characters

What does the term "Colour Depth" refer to in images?

• The brightness of the image

• The number of bits used for each colour

• The size of the image in pixels

• The number of pixels per inch

What is the binary equivalent of the hexadecimal number 'A'?

• 1010

• 1100

• 1001

• 1111

How many colours can be represented by an 8-bit colour depth?

• 256

• 16

• 64

• 1024

What is the hexadecimal equivalent of the binary number '1111'?

• 4

• 8

• F

• B

How many bits are used to represent a character in the ASCII encoding standard?

• 4 bits

• 7 bits

• 8 bits

• 16 bits

What is the base number of the binary system?

• 2

• 8

• 10

• 16