MH 1.4.1 Data Types

In floating point representation what is the purpose of the mantissa?

• Stores the actual value
• Stores the position of the binary point
• Tells you if the number is using two's complement or sign and magnitude
• Tells you know if the number is negative or positive

How would you store the base-10 denary number -55 using two's complement in 8-bits?

• 0011 0111
• 1100 1001
• 1010 0100
• 0101 0111

What is the hexadecimal number 20 in binary?

• 0010 0000
• 0000 0010
• 0001 0000
• 0001 0100

What is the number 6 in binary?

• 0000 0110
• 0000 1010
• 0011 1111
• 0000 0111

In this line of code: FOR counter = 1 to 10, what data type should counter be declared as?

• String
• Boolean
• Real
• Integer

What is the binary number 0011 0100 in hexadecimal?

• 34
• 24
• 38
• 52

What is the result of binary left shifting 0100 0010 one digit?

• 1000 0100
• 0010 0001
• 0100 0001
• 0010 0010

What is the result of using the XOR mask 1111 0000 with the binary value 1001 1101?

• 0110 0010
• 1001 1101
• 0110 1010
• 0110 1101

What does bitwise AND do to a sequence of bits?

• Toggles a subset of the bits
• None of these
• Extracts a subset of the bits
• Sets a subset of the bits

What is the result of using an AND mask 0101 1111 with the binary value 0110 0001?

• 0100 0001
• 0111 1111
• 1011 1111
• 1011 1110