Data Representation Quiz

Why do computers use binary to represent data?

• It is easier to read by humans

• Binary is more secure

• Computers use electrical signals that can be easily represented as on/off (1/0)

• It allows for faster processing speeds

Convert the decimal number 25 to binary.

• 11001

• 10101

• 11111

• 10011

What is the hexadecimal equivalent of the binary number 1010?

• F

• A

• C

• B

Why is hexadecimal often used in computing?

• It is simpler for humans than binary and it requires fewer digits

• It is cute

• It is the universal language of computers

• It is less error-prone than decimal

Add the binary numbers 11010101 and 00101101.

• 100000010

• 11111110

• 100000000

• 11000010

What is the concept of overflow in binary addition?

• When a binary number becomes too large to be represented within a given number of bits

• When binary numbers are added incorrectly

• When there is an error in binary subtraction

• When more bits are deleted than added

Perform a logical left shift on the binary number 00110100.

• 01101000

• 11010000

• 01101001

• 00110101

How does a computer use two's complement to represent negative numbers?

• By subtracting the binary number from zero

• By inverting the binary digits and adding one

• By doubling the binary number

• By using decimal numbers

Which character set includes more characters, ASCII or Unicode?

• ASCII

• Binary

• Hexadecimal

• Unicode

What effect does increasing the sample rate have on sound representation?

• It increases the volume

• It decreases the quality

• It improves the sound quality by capturing more details

• It has no effect