Higher Data Rep

The denary number -73 (negative 73) can be represented in binary using two's

complement by:

.

• a) 1000 1101

• b) 1011 0110

• c) 1100 1001

• d) 1011 0111

What is the range of numbers that could be represented by an 8-bit Two's complement binary number?

• -128 to +128

• -128 to +127

• -2048 to +2048

• -4096 to +4095

When giving more bits to mantissa and fewer to exponent, which is true?

• Accuracy increases, range increases

• Accuracy decreases, range decreases

• Accuracy increases, range decreases

• Accuracy decreases, range increases

A computer uses a floating point system consisting of 1 bit for the sign bit, 8 bits for

the mantissa and 7 bits for the exponent. What would the fractional binary number -110.10100 be stored as?

• 1 1010100 0000000

• 1 11010100 0000011

• 0 0000011 11010100

• 0 11010100 1100000

An advantage of UniCode over ASCII is:

• It takes less storage space up.

• It can represent all major world languages.

• Old computers cannot read it, forcing people to upgrade.

• It can be encrypted, unlike ASCII.

Decreasing the number of objects in a vector graphic image:

• increases the file size.

• decreases the file size.

• increases the resolution of the image.

• decreases the resolution of the image.