CIE AS Level Computer Science Quiz - Chapter 1

What is the primary purpose of using binary representation in computers?

• To simplify calculations for users

• To reduce the cost of computer components

• To represent data using two distinct states

• To increase the speed of data processing

How many bits are there in a byte?

• 2

• 4

• 8

• 16

Which of the following is a hexadecimal number?

• 123G

• 5F3

• 10102

• 19K

What is the binary equivalent of the decimal number 13?

• 1011

• 1100

• 1101

• 1110

What is the main advantage of using hexadecimal numbers in computing?

• Easier to understand than binary

• Requires more storage space

• Increases processing speed

• Reduces number of computations

How many bits are needed to represent the decimal number 255 in binary?

• 4

• 8

• 16

• 32

Which of the following is a method of representing negative numbers in BINARY?

• Sign-magnitude

• Decimal conversion

• Hexadecimal conversion

• Floating-point notation

What is the two's complement of the binary number 1010?

• 0101

• 1010

• 1110

• 0110

Which character encoding standard is widely used for text representation?

• ASCII

• JPEG

• MP3

• MPEG

What is the primary use of the Unicode standard?

• To encode audio files

• To compress images

• To represent text in multiple languages

• To speed up data transmission