Unit 2 data representation mega quiz

How are characters represented in binary?

• Using hexadecimal codes

• Using ASCII or Unicode

• Using decimal numbers

• Using Morse code

What is a character set?

• A collection of fonts

• A set of rules for displaying text

• A defined set of characters and their corresponding binary codes

• A type of encryption

If a character set uses 7 bits per character, how many unique characters can it represent?

• 7

• 64

• 128

• 256

Which of the following is true about the character codes in a character set?

• They are randomly assigned.

• The character code for 'C' is one less than the character code for 'B'.

• The character code for 'B' is one more than the character code for 'A'.

• They are based on the frequency of character usage.

How many bits are used to represent ASCII characters in this context?

• 7 bits

• 8 bits

• 16 bits

• 32 bits

How is an image represented digitally?

• As a series of vectors

• As a collection of shapes

• As a series of pixels represented in binary

• As a mathematical formula

What is metadata in an image file?

• The actual image data

• Additional information about the image, such as height and width

• The compression algorithm used

• The color palette

How does increasing the color depth affect the image quality and file size?

• Increases quality, decreases file size

• Decreases quality, increases file size

• Increases quality, increases file size

• Decreases quality, decreases file size

How does increasing the resolution affect the image quality and file size?

• Increases quality, decreases file size

• Decreases quality, increases file size

• Increases quality, increases file size

How is sound stored digitally?

• By recording the analog waveform directly

• By sampling the analog sound wave at regular intervals

• By converting the sound to text

• By representing the sound as a mathematical function