M4.Data Representation

What is the number system used by modern computers to represent data?

• Decimal

• Binary

• Octal

• Hexadecimal

In binary representation, how many bits are typically used to represent a single character in ASCII? Choose two.

• 4 bits

• 8 bits

• 16 bits

• 32 bits

• 7 bits

Which of the following is NOT a valid binary number?

• 1010

• 1101

• 1021

• 1110

What is the decimal equivalent of the binary number 1011?

• 10

• 11

• 12

• 13

Which of the following codes is used to represent text in computers?

• EBCDIC

• ASCII

• Unicode

• All of the above

What is the hexadecimal equivalent of the binary number 1010?

• A

• B

• C

• D

What does the term 'pixel' refer to in image representation?

• A small unit of sound

• The smallest element of a digital image

• A color depth measurement

• A file format for images

What does 'color depth' refer to in image representation?

• The number of colors an image can display

• The resolution of an image

• The file size of an image

• The brightness level of each pixel

In sound representation, what is typically used to convert sound waves into a digital format?

• Compression algorithms

• Sampling

• Bit mapping

• Color depth adjustment

What is the primary definition of metadata

• Data that is used for encryption

• Data about data

• Data that contains multimedia elements

• Data that is stored in a cloud