2023-24 - Y8 - Data Representation - Quiz 4

In the English alphabet there are 26 different letters. To encode each letter with a unique binary number, how many bits would need to be used?

• 1 bit
• 3 bits
• 5 bits
• 7 bits

Which of these best describes a character set?

• The possible characters that can be represented and used by a computer system
• The programming languages that can be used in a computer system
• The fonts that a computer system has installed
• The words that the computer system understands

Which of these best describe the reason why character sets were developed?

• To ensure that text could appear on screen
• To ensure keyboards were invented
• To ensure that computing devices could turn on
• To ensure all computing devices could communicate using the same encoding system

Which of these is the name of a character set?

• ATM
• AMD
• ASCII
• API

ASCII originally used 7 bits per character but now uses 8 bits per character. How many characters can this represent?

• 64
• 128
• 256
• 512

The image shows the ASCII decimal and binary codes for letters ABC. What would be the decimal and binary code for the letter D?

• 
• 
• 
• 

The image shows the ASCII decimal and binary codes for letters ABCD. What is spelled out by the following binary code: 01000011 01000001 01000010

• ABC
• DAB
• BAD
• CAB

The image shows the ASCII decimal and binary codes for letters ABCD. Which binary codes spell out the word BAD?

• 01000010 01000001 01000100
• 01000010 01000011 01000100
• 01000001 01000010 01000011
• 01000011 01000001 01000100

Which of these is the name of another character set?

• Upload
• USB
• UNIX
• Unicode

Which of these is NOT true about Unicode?

• Unicode represents more characters compared to ASCII
• The first characters represented in Unicode are the same as in ASCII
• Unicode uses less bits per character compared to ASCII
• Unicode contains characters such as emoji's and special characters