1.4.1 Data Types

Which of the following is NOT a primitive data type?

• Integer

• Real/Floating Point

• Array

• Boolean

How do computers store data?

• Using hexadecimal

• Using binary

• Using decimal

• Using octal

Which of the following is a process of converting a positive whole number to binary?

• Repeatedly divide the number by 2 and record the remainder.

• Repeatedly divide the number by 10 and record the remainder.

• Repeatedly multiply the number by 2 and record the remainder.

• Repeatedly multiply the number by 10 and record the remainder.

How are negative numbers represented in binary?

• Using Sign and Magnitude

• Using one's complement

• Using two's complement

• All of the above

What is the hexadecimal equivalent of the binary number 1010?

• 5

• 10

• A

• F

What is the process of normalisation in floating point numbers?

• Adjusting the mantissa and exponent

• Adjusting the integer part

• Adjusting the fractional part

• Adjusting the binary point

What is the first step in performing addition and subtraction of floating point numbers?

• Adding the mantissas

• Subtracting the mantissas

• Ensuring the numbers have the same exponent

• Converting the numbers to binary

What are bitwise operations performed on?

• Decimal numbers

• Hexadecimal numbers

• Bit patterns or binary numerals

• Floating point numbers

What do right and left logical shifts do in bitwise manipulation?

• Move the bits of a binary number to the right or left

• Add bits to a binary number

• Subtract bits from a binary number

• Convert binary numbers to decimal

How many bits does standard ASCII use to represent a character?

• 8 bits

• 7 bits

• 16 bits

• 32 bits